Modifiers matching contaminant:

• airborne,
• finer,
• harmful,
• biological,
• level,
• environmental,
• nasty,
• usual,
• ordinary,
• active,
• typical,
• organic,
• numerous,
• metallic,
• inorganic,
• several,
• harmless,
• solid,
• stable,
• greasy,
• industrial,
• secondary,
• common,
• gaseous,
• chemical,
• noxious,
• abrasive,
• slippery,
• multiple,
• experimental,
• ferrous,
• natural,
• lipophilic,
• over,
• concrete,
• fine,
• structural,
• sticky,
• surrounding,
• waterborne,
• physical,
• mechanical,
• damaging,
• everyday,
• particulate,
• single,
• colloidal,
• larger,
• volatile,
• hydrophobic,
• model,
• conductive,
• cationic,
• unhealthy,
• foreign,
• stubborn,
• abundant,
• unbound,
• radiological,
• heavier,
• conventional,
• granular,
• oily,
• new,
• mental,
• ferromagnetic,
• polar,
• endogenous,
• refractory,
• important,
• potential,
• large,
• extraneous,
• key,
• modern,
• floating,
• unwanted,
• passive,
• urban,
• noninfectious,
• charged,
• deadly,
• minor,
• removable,
• oleophilic,
• familiar,
• lighter,
• lightweight,
• incidental,
• undesirable,
• agricultural,
• liquid,
• smaller,
• up,
• unacceptable,
• reactive,
• unexpected,
• basic,
• possible,
• dietary,
• traditional,
• related,
• hazardous,
• deleterious,
• acidic,
• hard,
• ionic,
• corrosive,
• nonpolar,
• domestic,
• light,
• soft,
• detrimental,
• outside,
• unusual,
• microbial,
• molecular,
• external,
• semisolid,
• separate,
• difficult,
• persistent,
• aqueous,
• poisonous,
• unseen,
• biodegradable,
• animal,
• major,
• miscellaneous,
• accidental,
• carbonaceous,
• tough,
• gross,
• insoluble,
• synthetic,
• harsh,
• individual,
• salt,
• fibrous,
• conservative,
• non-metallic,
• unpleasant,
• caustic,
• meteorological,
• noncombustible,
• size,
• soluble,
• suspended,
• indoor,
• dissolved,
• polymeric,
• inedible,
• invisible,
• residual,
• excessive,
• outdoor,
• critical,
• pure,
• ic,
• viscous,
• clean,
• off,
• exogenous,
• local,
• first,
• dry,
• combustible,
• irritating,
• dangerous,
• out,
• world,
• energetic,
• visible,
• heavy,
• biologic,
• undesired,
• additional,
• microscopic,
• nonmetallic,
• anionic,
• toxic,
• hydrophilic,
• ambient,
• minute,
• dermal,
• unsightly,
• unique,
• radioactive,
• opaque,
• moving,
• carcinogenic,
• diverse,
• dense,
• siliceous,
• fluid,
• metal,
• regulated,
• coarse,
• interfering,
• loose,
• anthropogenic,
• atmospheric,
• elemental,
• mobile,
• small,
• intracellular,
• alkaline,
• magnetic,

Simple categories matching hard:

• surface,
• material,
• metal,
• work,
• chemical,
• output,
• tissue,
• medium,
• object,
• tick,
• deposit,
• food,
• wood,
• condition,
• insulator,
• disturbance,
• apple,
• medication,
• stone,
• outcome,
• part,
• area,
• indicator,
• belt,
• service,
• coal,
• liquor,
• case,
• contaminant,
• issue,
• pipe,
• rock,
• attribute,
• gem,
• furniture,
• block,
• item,
• sausage,
• incentive,
• beverage,
• fuel,
• candy,
• armour,
• adhesive,
• aggregate,
• institution,
• crime,
• component,
• compound,
• piece,
• copy,
• ion,
• place,
• job,
• weapon,
• barrier,
• bones,
• investment,
• drink,
• resin,
• artifact,
• evidence,
• bronze,
• crystal,
• hat,
• pen,
• yarn,
• vehicle,
• lolly,
• study,
• thermoplastic,
• structure,
• ball,
• needle,
• pavement,
• law,
• works,
• clay,
• fault,
• ware,
• formation,
• steel,
• pine,
• content,
• particulate,
• fastening,
• tag,
• article,
• devices,
• animal,
• sport,
• choice,
• alloy,
• coral,
• armor,
• drive,
• access,
• scientist,
• veggie,
• discipline,
• measure,
• floor,
• constraint,
• instrument,
• rubber,
• input,
• defence,
• skill,
• times,
• substrate,
• carbon,
• abrasive,
• matter,
• notebook,
• infrastructure,
• board,
• rule,
• bottom,
• edge,
• acceleration,
• obstruction,
• prey,
• fastener,
• panel,
• disease,
• professional,
• dog,
• toy,
• matrix,
• foodstuff,
• ligand,
• feed,
• beads,
• utensil,
• ingredient,
• format,
• starches,
• time,
• veg,
• appliance,
• key,
• furnishing,
• system,
• target,
• straw,
• oxide,
• region,
• science,
• technology,
• thing,
• acid,
• fiber,
• washer,
• activity,
• flooring,
• failure,
• unit,
• sweet,
• container,
• sector,
• wall,
• wedge,
• alcohol,
• grain,
• booze,
• ore,
• layer,
• nut,
• button,
• problem,
• reference,
• filler,
• nonmetal,
• impediment,
• wire,
• softwood,
• glass,
• wax,
• epithelium,
• powder,
• plastic,
• implement,
• fish,
• connection,
• hydrocarbon,
• gemstone,
• commitment,
• possession,
• water,
• grass,
• coating,
• appendage,
• lure,
• particle,
• knowledge,
• rind,
• disk,
• shell,
• quartz,
• cover,
• characteristic,
• cracker,
• seed,
• commodity,
• aspect,
• feature,
• elastomer,
• spirits,
• papers,
• labor,
• info,
• subject,
• vegetable,
• form,
• event,
• helmet,
• bottle,
• backing,
• ip,
• butter,
• exercise,
• scale,
• projectile,
• solid,
• workout,
• fixing,
• drug,
• benefit,
• organism,
• original,
• fat,
• device,
• information,
• control,
• substance,
• fruit,
• power,
• product,
• capital,
• waste,
• stuff,
• space,
• spice,
• fact,
• training,
• segment,
• mask,
• cheese,
• equipment,
• meat,
• tool,
• insect,
• labour,
• mineral,
• monomer,
• fibre,
• narcotic,
• point,
• base,
• landscaping,
• mode,
• identification,
• film,
• hardwood,
• variable,
• language,
• lump,
• wheat,
• grit,
• instrumentality,
• maple,
• packing,
• data,
• residue,
• biscuit,
• bait,
• bone,
• sheet,
• laser,
• boundary,
• stain,
• soil,
• pad,
• plate,
• confectionery,
• detector,
• use,
• ground,
• protein,
• brush,
• mast,
• procedure,
• fabric,
• paper,
• engineering,
• assets,
• portion,
• profession,
• ferrite,
• conveyance,
• track,
• constituent,
• room,
• tree,
• wealth,
• essence,
• body,