Simple categories matching elementary:

• object,
• symbol,
• particle,
• piece,
• idea,
• calculation,
• entity,
• program,
• motion,
• shape,
• type,
• curve,
• representation,
• feature,
• system,
• antiparticle,
• process,
• unit,
• topic,
• activity,
• event,
• component,
• figure,
• class,
• tool,
• stream,
• form,
• circuit,
• substance,
• transformation,
• emotion,
• movement,
• theme,
• thing,
• principle,
• defect,
• source,
• organization,
• ability,
• attribute,
• state,
• aspect,
• pattern,
• faculty,
• statistics,
• training,
• wave,
• case,
• set,
• operator,
• flow,
• antenna,
• necessity,
• instrument,
• block,
• organism,
• algebra,
• quantity,
• group,
• behavior,
• sensation,
• concept,
• function,
• product,
• mechanism,
• metal,
• relationship,
• part,
• surface,
• reaction,
• constituent,
• volume,
• action,
• subject,
• evidence,
• information,
• force,
• operations,
• structure,
• material,
• article,
• analysis,
• property,
• solid,
• measurement,
• phenomenon,
• instruction,
• sign,
• fragment,
• vocabulary,
• signal,
• polygon,
• lepton,
• operation,
• equipment,
• carbon,
• perception,
• measure,
• spread,
• behaviour,
• mathematics,
• notion,
• facility,
• picture,
• modality,
• characteristic,
• stage,
• essential,
• knowledge,
• automaton,
• gates,
• semiconductor,
• task,
• way,
• item,

Members with property elementary:

• compass,
• attachment,
• proton,
• fraction,
• electron,
• string,
• inverter_gates,
• given_rotation,
• amorphous_silicon,
• metadata_stream,
• neutron,
• quark,
• point_barycenter,
• photon,
• ion_generation,
• gauge_particle,
• quadrangle,
• subtraction,
• teeth,
• circle,
• atom,
• parallelogram,
• bond,
• electron_mass,
• bull_spread,
• pin,
• proton_neutron,
• disposable_needle,
• molecule,
• material,
• color,
• absorption,
• capture,
• line,
• vein,
• individual_word,
• vector_model,
• unambiguity,
• ratchet,
• waveguide,
• sine,
• neutrino,
• capacity,
• point_vortex,
• number_theory,
• software,
• bounding_rectangle,
• si_silicon,
• unstable_resonator,
• preparation,
• spherical_wave,
• polycrystalline_silicon,
• video_stream,
• fastener,
• trigonometry,
• arctangent,
• morpheme,
• uniqueness,
• counter,
• road,
• surface_texture,
• screwdriver,
• growth,
• direct_dissociation,
• square-root_function,
• molecular_weight,
• measure,
• ion,
• spark,
• sort,
• silicon,
• valve,
• shape,
• footer,
• elementary_algebra,
• nucleus_growth,
• bright_colors,
• ellipsoid,
• square,
• chemisorption,
• compactness,
• parallelepiped,
• variable_assignment,
• point,
• hole,
• powder,
• enterprise,
• bi,
• cylinder,
• mobility,
• organelle_activity,
• grasping,
• uniform_flow,
• animal,
• logical_condition,
• simple_touch,
• semiotic_square,
• polyhedron,
• gravity,
• decomposition,
• parcel,
• electron_charge,
• tissue,
• punctual_sensation,
• memory_circuit,
• block,
• bicycle,
• spline,
• pain,
• vessel,
• model_comparison,
• transistor,
• chicken,
• discriminating_quantity,
• rate_laws,
• room,
• darkness,
• electron_neutron,
• radio,
• gas,
• honor_roll,
• table,
• mass_spectrometry,
• click_behavior,
• division,
• quarter_circle,
• dynamics,
• college_algebra,
• arc,
• association,
• activity_room,
• geographical_distribution,
• clock_generator,
• membrane,
• employee_orientation,
• motor_activation,
• program,
• lense,
• rectangle_parallelogram,
• private_stream,
• replacement,
• minimum,
• love,
• brick,
• move,
• diamond,
• dot,
• differentiation,
• unit_steps,
• harmonic_oscillator,
• basic_dome,
• function,
• ge,
• corollary_delivery,
• spread,
• electron_capture,
• ionization,
• note,
• orthogonal_polynomial,
• assumption,
• development,
• composition,
• power,
• plane_wave,
• interval,
• gain,
• hate,
• image_gates,
• music,
• test_signal,
• header,
• charcoal,
• chain_stage,
• horizontal_line,
• feature_extraction,
• lifting_steps,
• values,
• perceptual_threshold,
• heat_transfer,
• vibratory_sensation,
• entablature,
• heat_capacity,
• aquatic_product,
• minute_particle,
• variable,
• index,
• chance,
• attaching_part,
• main_gas,
• syntax,
• graviton,
• contact,
• cos,
• physical_association,
• positron,
• spiral,
• integrator,
• distillation,
• graphite,
• fabric,
• sine_function,
• alphabet,
• ladder_structure,
• coordination,
• single_photon,
• filter,
• eyes_nose,
• nucleus_formation,
• circular_disk,
• crystal_structure,
• clock_tick,
• motion,
• auger_decay,
• pencil,
• feature,
• amide,
• nature_play,
• building,
• replication_slippage,
• spatial_relations,
• size,
• massive_neutrino,
• drawing,
• edge,
• acidity,
• channel,
• adsorption,
• gluon,
• philosophy,
• general_characteristic,
• pipe,
• classroom,
• polygon,
• molybdenum,
• chromosome,
• wedge_product,
• boundedness,
• batch_exposure,
• lumber,
• nose,
• practice,
• hammer,
• real_number,
• power_function,
• multiplication,
• use,
• sound_source,
• activation,
• gas_diffusion,
• perception,
• sin,
• paper,
• continuity,
• electrostatic_potential,
• plane,
• aaa_program,
• plank,
• muon,
• polymerase_binding,
• cold,
• surface,
• spring_picture,
• nuclear_reaction,
• tellurium,
• interoperability,
• arithmetic,
• electric_charge,
• abstraction,
• robot,
• particle,
• clean_water,
• free_vortex,
• memory,
• triangle,
• fae,
• speed,
• natural_exponential,
• fermion,
• working_memory,
• graphics,
• tangent,
• curve,
• shovel,
• fill,
• ionic_current,
• cube,
• taste,
• hadron,
• line_source,
• toothpick,
• low_education,
• dna_molecule,
• harmonic_interval,
• inductor,
• fiber,
• anaphora_resolution,
• pion,
• spring,
• density,
• audio_clip,
• pump,
• attention,
• algebra,
• smoke,
• boson,
• error_function,
• slider,
• banjo_part,
• recording_conversation,
• heat,
• file,
• character,
• hot_water,
• area,
• wave_height,
• cosine,
• computer,
• comma,
• colors,
• straight_line,
• adder,
• accidental,
• droplet_deposit,
• needle,
• dipole,
• sex_behaviour,
• place,
• kinship,
• texture,
• thread_state,
• fire,
• surface_diffusion,
• crystal_silicon,
• margin,
• proper_utensil,
• event,
• execution_time,
• repetitive_exercise,
• button,
• ellipse,
• blade,
• response_facilitation,
• smooth_cylinder,
• light_wave,
• orientation,
• algorithm,
• location,
• vocal_gesture,
• gymnasium,
• soliton_generation,
• chemical_transformation,
• respiration,
• shot,
• deposition,
• plate_source,
• fibre,
• calculation_formula,
• soil_ph,
• tutorial_form,
• reactor,
• hydride_decomposition,
• generic,
• centroid,
• understanding,
• meson,
• transformation,
• calculation,
• ellipsis,
• disk,
• reflective_surface,
• sealing_system,
• average,
• cuboid,
• eye,
• alphanumeric_character,
• linear_algebra,
• adequate_kitchen,
• position_sense,
• emission,
• translation,
• detector_click,
• rent_commitment,
• antimatter_particle,
• site_transformation,
• desorption,
• data_type,
• rarefaction_wave,
• chain_motion,
• pressure,
• jawan_name,
• thin_layer,
• early_perception,
• depth,
• value_domain,
• quadratic,
• distance,
• muscle,
• ge_germanium,
• temperature,
• concept,
• charge,
• table_manners,
• room_dimension,
• crop_report,
• bricklaying,
• ph,
• simple_attention,
• contrast,
• soil,
• exponential_set,
• mass,
• text_body,
• phrase-structure_rule,
• germanium,
• release,
• ease,
• outward_deal,
• direct_effectiveness,
• chromium,
• ax_position,
• grain,
• bearing,
• resistor,
• simulation,
• weight,
• wood,
• biochemical_transformation,
• combustion_reaction,
• precipitation,
• hyperbolic_function,
• involute_curve,
• euclidean_group,
• data_elements,
• aluminum,
• phase_margin,
• column,
• flow,
• video,
• sensation,
• trigonometric_function,
• label,
• exponential,
• ruler,
• disc,
• single_fiber,
• windscreen,
• kitchen,
• nutrition,
• jewish_history,
• bolt,
• gear,
• grapheme,
• nonagon,
• golden_rectangle,
• feed,
• continuous_line,
• electronic_gates,
• prism,
• paved_roads,
• basic_geometry,
• photosynthesis,
• diffusion,
• navigation,
• co2_fixation,
• nail,
• lepton,
• wimp_neutrino,
• letters,
• cartilage,
• differential_form,
• parabola,
• screw,
• bit_flip,
• volume,
• trapezoid,
• boundary,
• sigma_particle,
• rest,
• organizational_preparation,
• capacitor,
• air,
• isolation,
• differential_circuit,
• empty_aluminum,
• door,
• fact,
• comparison,
• text,
• graphics_stream,
• mass_transfer,
• toilet,
• reaction,
• hemisphere,
• planar_face,
• connectedness,
• chemical_structure,
• conic,
• polynomial,
• observation_operator,
• water,
• rotation_group,
• binocular_disparity,
• addition,
• rotation,
• vehicle,
• detachment,
• deep_pressure,
• uv_spectroscopy,
• straightedge,
• elementary_calculus,
• earth,
• plan,
• strand,
• clock_setting,
• stroke,
• radical,
• sphere,
• variable_type,
• symmetry,
• antiproton,
• folic-acid_supplementation,
• four_rule,
• cone,
• lightning,
• arctan,
• descriptive_statistics,
• candle,
• hyperon,
• beam,
• geography,
• wave,
• hydrogen_abstraction,
• geometry,
• repetition,
• logarithmic_function,
• bathroom,
• divider,
• cell,
• reactant_coordination,
• box,
• temperature_sense,
• hoe,
• number,
• generalized_cylinder,
• correlation,
• audio_stream,
• frame,
• eyes,
• relations,
• mouse_move,
• vortex,
• sight,
• news_release,
• superstring,
• wheelbarrow,
• passage,
• memory_requirement,
• active_filter,
• significance,
• washing,
• adjectival_agreement,
• inhibitory_control,
• vertex,
• formula_unit,
• pick,
• light,
• nontransferable_frame,
• filtration,
• point_defect,
• motion_detection,
• streak,
• audio,
• variable_access,
• fork,
• oval,
• roof,
• dissociation,
• camera,
• chin,
• space,
• inflection_point,
• alarm_collector,
• form,
• direct_wave,
• stick,
• point_centroid,
• electron_transfer,
• place_value,
• cultural_amenities,
• truss,
• gas_temperature,
• rank-order_case,
• tree,
• resonant_dissociation,
• theory,
• tetrahedron,
• school_address,
• movie_frame,
• mouth,
• battery,
• timer,
• inference,
• semicolon,
• words,
• macromolecule,
• history,
• elongated_elements,
• loop,
• analytic_geometry,
• plant,
• oxidative_addition,
• type,
• transport,
• kaon,
• ip_address,
• touch,
• system_stream,
• fear,
• tan,
• chamber,
• step_ionization,
• protein_transport,
• charge_transfer,
• rectangle,
• testing,
• value,
• flash_unit,
• regular_polygon,
• integer,
• people,
• bunting_material,
• average_benefit,
• reductive_elimination,
• network_connection,
• expansion,
• helix,
• descriptive_biology,
• ester,
• apoptosis,
• wedge,
• small_line,
• multiplying_matrix,
• brightness,
• germicidal_lamp,
• joke,
• gates,
• perimeter,
• bromine_abstraction,
• wimp,
• cellular_rhythm,
• si,
• bone,
• image,
• buffer,
• constant,