Modifiers matching safety:

• structural,
• active,
• personal,
• passive,
• electrical,
• industrial,
• general,
• systemic,
• interior,
• occupational,
• marine,
• public,
• internal,
• pedestrian,

Simple categories matching passive:

• liquid,
• income,
• trap,
• approach,
• activity,
• movement,
• structure,
• system,
• dispenser,
• form,
• endeavour,
• attitude,
• artefact,
• intervention,
• measure,
• material,
• element,
• access,
• plate,
• failure,
• block,
• method,
• conductor,
• object,
• area,
• implementation,
• feature,
• elements,
• medium,
• process,
• quantity,
• transport,
• predator,
• device,
• care,
• component,
• level,
• gear,
• earnings,
• technology,
• therapy,
• restraint,
• gas,
• damper,
• characteristic,
• mixer,
• metal,
• investment,
• means,
• procedure,
• outlet,
• craft,
• constituent,
• constraint,
• program,
• losses,
• part,
• exercise,
• data,
• facility,
• instruction,
• profit,
• task,
• cooling,
• surface,
• equipment,
• control,
• radiator,
• instrument,
• circuit,
• property,
• design,
• emotion,
• nature,
• mechanism,
• model,
• bird,
• safety,
• content,
• stretch,
• obstacle,
• usage,
• treatment,
• vessel,
• attribute,
• modality,
• energy,
• conveyor,
• education,
• tool,
• production,
• particle,
• assets,
• use,
• state,
• tissue,
• devices,
• information,
• tag,
• action,
• organism,
• regulation,
• stretching,
• display,
• concept,
• game,
• dielectric,
• quality,
• sensor,
• motion,
• interference,
• barrier,
• source,
• character,
• inactivity,
• entity,
• communication,
• appliance,
• transducer,
• contaminant,
• entertainment,
• recreation,