Modifiers matching income:

• periodic,
• independent,
• outside,
• passive,
• related,
• unearned,
• local,
• active,
• ancillary,
• personal,
• current,
• domestic,
• primary,
• additional,
• annual,
• global,
• total,
• australian,
• extra,
• monthly,
• foreign,
• variable,
• regular,
• significant,
• economic,
• earned,
• ordinary,
• secondary,
• movable,
• future,
• miscellaneous,
• private,
• taxable,
• corporate,
• fixed,
• individual,
• financial,
• alternative,
• out,

Simple categories matching passive:

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