Simple categories matching opposing:

• thing,
• group,
• force,
• property,
• image,
• team,
• characteristic,
• process,
• state,
• party,
• event,
• duality,
• category,
• aspect,
• phenomenon,

Members with property opposing:

• culture,
• centrifugal_force,
• light,
• cell_proliferation,
• friction,
• stillness,
• gravity,
• extension,
• political_affiliation,
• wind,
• work,
• gravitation,
• dark_state,
• low_friction,
• brisk_wind,
• green,
• sedimentation,
• neighborhood_association,
• various_government,
• police,
• current,
• softness,
• affirmation,
• state_office,
• military_police,
• river_current,
• steady_current,
• bow,
• justice,
• retina_light,
• dod,
• crown,
• protective_order,
• heat,
• freedom_desire,
• order,
• good_news,
• telomere_polymerization,
• oecumenical_council,
• head_wind,
• workplace_union,
• producer,
• sunni,
• union,
• attractive_interaction,
• plaintiff,
• terminal_differentiation,
• high-temperature_strength,
• parity,
• organization,
• apoptosis,
• hardness,
• frictional_force,
• disparity,
• perceptual_inhibition,
• welfare,
• darkness,
• blue,
• chaos,
• labor_organization,
• healthcare_insurer,
• labour_opposition,
• regional_grouping,
• generosity,
• relaxation,
• city-council_member,
• motion,
• proliferation,
• moral_majority,
• defendant,
• christian_coalition,
• summation,
• australian_council,
• room,
• peace_movement,
• nationality,
• originality,
• infection,
• conformity,
• stretchy_band,
• closeness,
• differentiation,
• pm,
• religion,
• retraction,
• large_corporation,
• nature,
• arrow,
• shia,
• authority,
• viscous_drag,
• wind_resistance,