Modifiers matching import:

• vital,
• french,
• necessary,
• valuable,
• chinese,
• basic,
• cheap,
• practical,
• key,
• essential,
• cultural,
• critical,
• exclusive,
• english,
• asian,
• crucial,
• african,
• productive,
• supplementary,
• vocational,
• exotic,
• nuclear,
• invisible,
• dangerous,
• major,
• foreign,
• larger,

Simple categories matching invisible:

• organism,
• attribute,
• radiation,
• entity,
• force,
• thing,
• agent,
• being,
• symbol,
• cause,
• material,
• matter,
• range,
• character,
• course,
• quality,
• adhesive,
• trait,
• disease,
• particle,
• diversity,
• microorganism,
• image,
• difficulty,
• substance,
• difference,
• symptom,
• ink,
• quantity,
• object,
• ideal,
• offense,
• nature,
• light,
• item,
• objective,
• power,
• state,
• phenomenon,
• wave,
• import,
• fluid,
• reality,
• structure,
• process,
• vision,
• condition,
• defect,
• energy,
• trade,
• property,
• substructure,
• variable,
• illness,
• disability,
• microbe,
• gas,
• germ,
• elements,
• creature,
• level,
• contaminant,
• ray,