Simple categories matching directional:

• symbol,
• artifact,
• lighting,
• sign,
• light,
• information,
• beam,
• effect,
• fixture,
• coupler,
• signal,
• sense,
• indicator,
• microphone,
• cue,
• connector,
• device,
• mounting,

Members with property directional:

• spotlight,
• directional_words,
• background,
• arrow,
• mechanical_stimulation,
• mini_flashlight,
• wind_direction,
• flood_light,
• sun,
• directional_arrow,
• address,
• style,
• view_sphere,
• sign_light,
• floodlight,
• image,
• wind,
• searchlight,
• street_identification,
• poster,
• searchlight_mounting,
• fire,
• no_entry,
• boom_microphone,
• canister_lighting,
• beam_transmitter,
• halogen_bulb,
• spot_light,
• stereo_information,
• service_sign,
• sunlight,
• current_direction,
• streamer,
• shotgun_microphone,
• reader_light,
• track_lighting,
• compass_direction,
• parallel_light,
• diagonal_worm,
• direction,
• reflector_light,
• gyroscope,
• exit_sign,
• deformation_due,
• spot_lighting,
• name,
• magnetometer,
• lange_coupler,
• light,
• directional_coupler,
• smell,
• right,
• lateral,
• trailer_sign,
• flash,
• background_light,
• vertical_right,
• coupler,