Modifiers matching safety:

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

Simple categories matching electrical:

• appliance,
• equipment,
• fixture,
• filter,
• product,
• level,
• item,
• controller,
• stuff,
• part,
• conduction,
• point,
• system,
• conductor,
• car,
• addition,
• motor,
• component,
• input,
• unit,
• interference,
• artifact,
• actuator,
• capacity,
• device,
• facility,
• fuse,
• topic,
• quantity,
• measurement,
• kitchenware,
• event,
• principle,
• thermometer,
• use,
• accident,
• energy,
• characteristic,
• lead,
• function,
• failure,
• heater,
• obstruction,
• body,
• alarm,
• source,
• nature,
• topology,
• drive,
• pulse,
• service,
• focus,
• drawing,
• sound,
• potential,
• response,
• engineering,
• malfunction,
• option,
• stimulation,
• disorder,
• task,
• penetration,
• safety,
• tool,
• fiber,
• path,
• lamp,
• requirement,
• concept,
• perturbation,
• liquid,
• constraint,
• fitting,
• behavior,
• plant,
• line,
• data,
• process,
• construction,
• hazard,
• elements,
• converter,
• outlet,
• danger,
• insulation,
• chip,
• field,
• network,
• utility,
• information,
• thruster,
• generator,
• resistor,
• devices,
• enclosure,
• housing,
• user,
• subsystem,
• parameter,
• disturbance,
• machinery,
• switch,
• accessory,
• performance,
• theory,
• contact,
• job,
• apparatus,
• support,
• measure,
• circuit,
• structure,
• piece,
• application,
• operator,
• condition,
• meter,
• repair,
• adjustment,
• pressure,
• content,
• installation,
• igniter,
• cause,
• cable,
• thing,
• table,
• signal,
• terms,
• modification,
• works,
• aperture,
• resistance,
• communication,
• maintenance,
• work,
• sensor,
• abnormality,
• activity,
• explosion,
• protection,
• losses,
• instrument,
• vehicle,
• skill,
• industry,
• machine,
• fault,
• supply,
• testing,
• load,
• worker,
• phenomenon,
• conductivity,
• current,
• injury,
• stimulus,
• indicator,
• change,
• discharge,
• science,
• effect,
• feature,
• mechanism,
• article,
• element,
• relationship,
• receptacle,
• box,
• gear,
• socket,
• insulator,
• property,
• gadget,
• action,
• ground,
• hardware,
• metal,
• assembly,
• power,
• noise,
• connector,
• object,
• strip,
• toy,
• means,
• connection,
• behaviour,
• display,
• material,
• particle,
• medium,
• force,
• knowledge,
• control,
• wire,
• test,
• transducer,
• circuitry,