Simple categories matching ambient:

• change,
• light,
• hazard,
• lighting,
• condition,
• energy,
• illumination,
• environment,
• debris,
• medium,
• sound,
• particulate,
• display,
• pollution,
• fumes,
• force,
• data,
• genre,
• interference,
• noise,
• fluid,
• temperature,
• quantity,
• track,
• particle,
• feature,
• air,
• event,
• water,
• gas,
• source,
• information,
• signal,
• stimulus,
• contaminant,

Members with property ambient:

• natural_gas,
• stability,
• cash-register_ringing,
• dirt,
• humidity,
• sunlight_ray,
• sunshine,
• lake,
• roaring_fire,
• light,
• water,
• engine_noise,
• sunlight,
• air,
• heat,
• current_flow,
• citizen_chatter,
• vibration,
• abs,
• jet-engine_roar,
• natural_sunlight,
• system_vacuum,
• shock,
• tree_rustle,
• ship_bell,
• incandescent_lamp,
• resource_starvation,
• no_humidity,
• high_vacuum,
• street_life,
• headlamp,
• dust,
• mechanical_force,
• starlight,
• moisture,
• water_stress,
• indoor_illumination,
• aggressive_atmosphere,
• noise,
• dirt_particle,
• fluorescent_light,
• ground_lighting,
• atmospheric_electricity,
• ring_bell,
• glare,
• dorian_footstep,
• soil_surface,
• crowd_noise,
• mechanical_vibration,
• subway_rumble,
• housing_quality,
• fumes,
• direction,
• river,
• electricity,
• ar,
• source_water,
• mechanical_motion,
• sound,
• white_light,
• moon_light,
• voice,
• biplane_sound,
• traffic_sound,
• ventilation_noise,
• uv_level,
• temperature_fluctuation,
• acid_soil,
• lighting,
• bell_ringing,
• warning_siren,
• funny_noise,
• wave,
• direct_sunlight,
• soil,
• ionic_strength,
• soil_moisture,
• projection,
• substrate_noise,
• exposure,
• grime,
• change,
• chlorine,
• nature_sound,
• motion,
• daylight,
• television_lighting,
• tv_broadcast,
• sun_light,
• density,
• barometric_pressure,
• illumination,
• particulate_matter,
• body_heat,
• moonlight,
• early_reflection,
• winter_month,
• aircraft_overhead,
• oxygen_regulation,
• loud_music,
• door_creaking,
• yard_light,
• printing_activity,
• argon,
• ceiling_height,
• airflow_level,
• nutritional_status,
• lighting_level,
• changing_light,
• oxygen,
• atmospheric_pressure,
• flow_velocity,
• purity,
• enthalpy,
• light_condition,
• setting_sun,
• hydrogen_gas,
• temperature_shock,
• spot_light,
• rustle,
• air-conditioning_noise,
• rf_energy,
• artificial_lighting,
• gas_fumes,
• bell,
• train,
• humidity_level,
• room_noise,
• low_humidity,
• helium,
• footstep,
• sound_level,
• medium,
• xenon,
• pressure,
• ground,
• various_gas,
• camera_whirring,
• cold,
• sea_water,
• high_humidity,
• ringing_bell,
• sun,
• star_light,
• nitrogen_gas,
• office_environment,
• air_temperature,
• acoustic_event,
• surface_moisture,
• fan_noise,
• gravity,
• candlelight,
• porch_light,
• water_current,
• design,
• laser_energy,
• posture,
• water_quality,
• street_light,
• solar_radiation,
• air_quality,
• natural_daylight,
• transient_noise,
• mortar_explosion,
• earth,
• he,
• temperature_control,
• music,
• climate,
• biota,
• caustic_vapors,
• building_light,
• road_warning,
• full_sunlight,
• surf_noise,
• mechanical_shock,
• squeak,
• street_lighting,
• human_voice,
• ground_pollution,
• argon_gas,
• vacuum_pressure,
• holiday_harmony,
• train_rumble,
• insect_humming,
• car_honk,
• wind,
• population_pressure,
• light_level,
• noisy_background,
• pet_noise,
• theatrical_lighting,
• house_lighting,
• air_turbulence,
• induced_vibration,
• piano,
• exterior_wall,
• ion_temperature,
• yard_lighting,
• ocean_wave,
• rain_fall,
• level,
• artificial_light,
• ozone,
• thunder,
• temperature,
• material_moisture,
• air_noise,
• temperature_variation,
• hydrogen,
• backlighting,
• overhead_lighting,
• moon,
• vehicle_light,
• audio_sound,
• atmosphere,
• leaf,
• stereo_sound,
• vehicle_sound,
• surf,
• co2_content,
• bomb,
• warning,
• co2,
• microwave_interference,
• baby_cry,
• special_gas,
• hot_sun,
• fire,
• machine_noise,
• traffic_noise,
• fog,
• medium_voice,
• cloud,
• stagnant_air,
• presence,
• small_room,
• hoof_clop,
• liquid_environment,
• identity,
• vacuum,
• crashing_wave,
• ambient_lighting,
• rumble,
• movement,
• extreme_heat,
• reflection,
• intangible_data,
• pollen_leaf,
• moisture_content,
• corrosive_soil,
• window_light,
• body_movement,
• wind_sound,
• water_movement,
• wave_action,
• warning_sound,
• wind_noise,
• leaf_rustling,
• distance,
• turbulence,
• river_water,
• fluid_level,
• glow_light,
• water_feature,
• gas,
• illumination_level,
• nitrogen,
• uv_exposure,