Modifiers matching particulate:

• organic,
• diverse,
• micro,
• airborne,
• inorganic,
• metal,
• powdered,
• fine,
• insoluble,
• available,
• chemical,
• suspended,
• solid,
• tiny,
• abrasive,
• inert,
• soft,
• crustal,
• natural,
• indoor,
• heavy,
• coated,
• larger,
• biological,
• foreign,
• fibrous,
• secondary,
• silver,
• atmospheric,
• large,
• sharp,
• small,
• ceramic,
• allergenic,
• pathogenic,
• charged,
• crystalline,
• conductive,
• unhealthy,
• nonmetallic,
• hard,
• dustlike,
• toxic,
• ambient,
• hazardous,
• supplemental,
• coarse,
• unwanted,
• size,
• dry,
• gross,
• smaller,
• liquid,
• microscopic,
• floating,

Simple categories matching nonmetallic:

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