Modifiers matching impurity:

• soluble,
• absorptive,
• physical,
• chemical,
• airborne,
• volatile,
• ordinary,
• mechanical,
• natural,
• up,
• coarse,
• fine,
• nonpolar,
• heterogeneous,
• microscopic,
• mental,
• visible,
• dilute,
• organic,
• heavier,
• separate,
• harmful,
• desirable,
• homogeneous,
• common,
• reactive,
• possible,
• insoluble,
• inorganic,
• atmospheric,
• hazardous,
• random,
• small,
• undesired,
• off,
• solid,
• stubborn,
• initial,
• corrosive,
• foreign,
• biological,
• residual,
• lightweight,
• little,
• suspended,
• ionic,
• fluid,
• unwanted,
• gaseous,
• active,
• light,
• minute,
• micro,
• mobile,
• colloidal,
• polar,
• damaging,
• smaller,
• particulate,
• environmental,
• minor,
• dissolved,
• lighter,
• harmless,
• anionic,
• sticky,
• unavoidable,
• out,
• interfering,

Simple categories matching inorganic:

• herbicide,
• substance,
• item,
• material,
• waste,
• surface,
• salt,
• compound,
• abradant,
• deposit,
• membrane,
• filler,
• medium,
• form,
• matter,
• particle,
• group,
• metal,
• nature,
• poison,
• clay,
• chemical,
• carbide,
• colloid,
• nitrate,
• solid,
• component,
• glasses,
• radical,
• anion,
• polymer,
• hydroxide,
• pesticide,
• element,
• packing,
• metabolite,
• science,
• iodide,
• fluoride,
• residue,
• dielectric,
• solute,
• entity,
• silicate,
• adhesive,
• nutrient,
• buffer,
• atom,
• glass,
• fibre,
• coagulant,
• cement,
• fiber,
• plating,
• semiconductor,
• thing,
• polyphosphate,
• carrier,
• film,
• antiquity,
• impurity,
• agent,
• thickener,
• binder,
• residual,
• sorbent,
• precursor,
• acetate,
• phosphate,
• plate,
• solution,
• ion,
• halide,
• intermediate,
• product,
• crystal,
• acceptor,
• support,
• sediment,
• mineral,
• complex,
• nanotube,
• unit,
• pigment,
• contaminant,
• system,
• peroxide,
• insulator,
• inhibitor,
• molecule,
• constituent,
• acid,
• fertilizer,
• layer,
• structure,
• technology,
• board,
• conductor,
• solvent,
• gas,
• artifact,
• composition,
• contamination,
• azide,
• particulate,
• aggregate,
• grit,
• alkali,
• ligand,
• builder,
• object,
• fraction,
• nitrogen,
• matrix,
• soil,
• powder,
• content,
• hap,
• base,
• detritus,
• substrate,
• carbon,
• macromolecule,
• coating,
• sample,
• fertiliser,
• chemistry,
• liquid,
• mixture,
• cyanide,
• oxide,
• insecticide,
• topic,
• mercury,
• electrolyte,