Modifiers matching contamination:

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

Simple categories matching solid:

• lead,
• object,
• viscera,
• material,
• aluminum,
• coating,
• stick,
• instrument,
• carrier,
• wood,
• surface,
• scrap,
• ballast,
• waste,
• mixture,
• content,
• earth,
• fuel,
• recipe,
• substrate,
• structure,
• assets,
• region,
• fence,
• spread,
• science,
• container,
• cement,
• carbon,
• particle,
• composition,
• line,
• film,
• plant,
• embolus,
• boundary,
• absorbent,
• mass,
• protein,
• fixture,
• profession,
• fabric,
• base,
• deformation,
• message,
• sugar,
• malignancy,
• cancer,
• crystal,
• equipment,
• medicine,
• hydrocarbon,
• fluid,
• furniture,
• brand,
• pane,
• salt,
• combustible,
• ingredient,
• iron,
• property,
• attribute,
• obstruction,
• impurity,
• publication,
• representation,
• weapon,
• grey,
• image,
• foundation,
• planet,
• plan,
• topper,
• hardwood,
• byproduct,
• biomass,
• wall,
• substance,
• hair,
• chemical,
• polygon,
• credential,
• value,
• information,
• obstacle,
• thermoplastic,
• resin,
• ink,
• shape,
• agent,
• slurry,
• compound,
• world,
• sample,
• insulator,
• ring,
• support,
• volatile,
• debris,
• commodity,
• nature,
• tone,
• board,
• figure,
• laser,
• cargo,
• part,
• decoration,
• colors,
• dosage,
• volume,
• anchor,
• contaminant,
• core,
• construction,
• receptacle,
• powder,
• space,
• pollutant,
• facility,
• team,
• guidebook,
• pin,
• ware,
• article,
• neoplasm,
• magnet,
• fruit,
• characteristic,
• residue,
• interface,
• symbol,
• block,
• joint,
• contamination,
• platform,
• fertiliser,
• drink,
• footwear,
• favorite,
• recovery,
• medicament,
• dielectric,
• layer,
• wax,
• timber,
• sphere,
• manure,
• growth,
• explosive,
• coal,
• tumour,
• stone,
• deposit,
• medication,
• investment,
• clothing,
• stain,
• ball,
• cosmetic,
• system,
• saccharide,
• gemstone,
• solute,
• nickel,
• implement,
• aerosol,
• specimen,
• beverage,
• lubricant,
• metal,
• addition,
• makeup,
• carbonate,
• lesion,
• oxide,
• missile,
• sterol,
• portion,
• rod,
• abrasive,
• plastic,
• subject,
• sorbent,
• meal,
• body,
• tissue,
• component,
• concrete,
• entity,
• constituent,
• sweetener,
• electrode,
• electrolyte,
• bar,
• footgear,
• fastener,
• tree,
• lipid,
• converter,
• fibre,
• projection,
• fiber,
• catalyst,
• product,
• pollution,
• alcohol,
• element,
• binder,
• matter,
• foodstuff,
• carbohydrate,
• unit,
• thread,
• backing,
• soil,
• thing,
• vegetable,
• color,
• projectile,
• adhesive,
• tool,
• precursor,
• sheet,
• aggregate,
• top,
• coat,
• process,
• formation,
• device,
• edible,
• education,
• tumor,
• mineral,
• paper,
• conductor,
• needle,
• item,
• polymer,
• preparation,
• feature,
• feed,
• member,
• fare,
• fat,
• foam,
• organs,
• shaft,
• particulate,
• ornament,
• mechanics,
• cylinder,
• drug,
• medium,
• idea,
• area,
• section,
• refrigerant,
• evidence,
• starches,
• oil,
• counter,
• piece,
• barrier,
• filler,
• rest,
• propellant,
• form,
• food,
• substratum,
• rock,
• stuff,
• fertilizer,
• organ,
• matrix,
• quality,
• cheese,
• fencing,
• acid,
• state,
• grain,
• data,
• flooring,