Modifiers matching contamination:

• inorganic,
• external,
• airborne,
• light,
• minor,
• common,
• colloidal,
• metal,
• particulate,
• active,
• deleterious,
• organic,
• environmental,
• inert,
• polar,
• regulated,
• solid,
• undesired,
• incidental,
• basic,
• chemical,
• charged,
• metallic,
• physical,
• insoluble,
• up,
• visible,
• hazardous,
• interfering,
• volatile,
• possible,
• internal,
• biological,
• unwanted,
• heavy,
• alkaline,
• hydrophilic,
• gross,
• fluid,
• atmospheric,
• salt,
• extraneous,
• nonpolar,
• microbial,
• toxic,
• loose,
• animal,
• regular,
• heavier,
• residual,
• fecal,
• industrial,
• molecular,
• off,
• liquid,
• penetrating,
• potential,
• gaseous,
• fragile,
• high,
• irritating,
• cross,
• foreign,
• natural,
• overhead,
• harmful,
• soft,

Simple categories matching particulate:

• matter,
• slurry,
• polymerization,
• chromium,
• material,
• fiber,
• coal,
• property,
• composition,
• beverage,
• metal,
• impurity,
• system,
• suspension,
• solid,
• application,
• carcinogen,
• fuel,
• ingredient,
• substance,
• form,
• waste,
• filter,
• agent,
• oxide,
• specimen,
• contaminant,
• object,
• layer,
• filler,
• structure,
• component,
• pollutant,
• organism,
• residue,
• artifact,
• product,
• magnetite,
• cheese,
• chemical,
• compound,
• entity,
• characteristic,
• binder,
• dielectric,
• conductor,
• foodstuff,
• particle,
• antigen,
• soil,
• mineral,
• fraction,
• deposit,
• surface,
• food,
• carrier,
• cereal,
• evidence,
• sulfate,
• abrasive,
• measurement,
• marker,
• sorbent,
• shape,
• polymer,
• pollution,
• process,
• substrate,
• weather,
• inclusion,
• contamination,
• measure,
• nature,
• medium,