Modifiers matching coating:

• smooth,
• organic,
• reflective,
• topical,
• protective,
• new,
• liquid,
• aesthetic,
• decorative,
• impervious,
• resistant,
• nonconductive,
• frictional,
• refractory,
• miscellaneous,
• thermoplastic,
• specialized,
• solid,
• corrosive,
• standard,
• nonmetallic,
• metal,
• internal,
• opaque,
• color,
• abrasive,
• temporary,
• fragile,
• synthetic,
• polymeric,
• clear,
• thick,
• visible,
• old,
• architectural,
• exterior,
• expensive,
• wet,
• common,
• colored,
• optical,
• additional,
• hydrophilic,
• top,
• uniform,
• brittle,
• over,
• chemical,
• hard,
• conventional,
• tough,
• optional,
• plastic,
• fine,
• viscous,
• pearlescent,
• biological,
• glossy,
• black,
• base,
• overlying,
• loose,
• external,
• magnetic,
• sensitive,
• difficult,
• indoor,
• modern,
• interior,
• nontoxic,
• relevant,
• suitable,
• appropriate,
• insoluble,
• soft,
• environmental,
• advanced,
• functional,
• waterproof,
• industrial,
• preservative,
• ordinary,
• traditional,
• ceramic,
• metallic,
• thicker,
• conductive,
• specified,
• durable,
• supplementary,
• bituminous,
• nonstructural,
• alternative,
• special,
• secondary,
• stubborn,
• marine,
• thin,
• popular,
• transparent,
• nonmagnetic,
• natural,
• heavy,
• impermeable,
• permanent,
• dark,
• reactive,
• inorganic,
• unwanted,
• outer,
• slippery,
• friendly,
• porous,

Simple categories matching nonmetallic:

• liquid,
• material,
• weapon,
• mineral,
• body,
• commodity,
• fiber,
• structure,
• glasses,
• compound,
• substance,
• container,
• object,
• item,
• surface,
• polymer,
• gem,
• deposit,
• matrix,
• atom,
• particle,
• medium,
• dust,
• element,
• coating,
• solid,
• line,
• facility,
• metal,
• particulate,
• contaminant,
• core,
• instrument,
• system,
• agent,
• barrier,
• tool,
• connection,
• substrate,
• component,
• pipe,
• inclusion,
• residue,
• carcinogen,
• matter,
• part,