Modifiers matching contamination:

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

Simple categories matching charged:

• fluid,
• molecule,
• species,
• particle,
• fermion,
• substance,
• group,
• nutrient,
• body,
• atom,
• compound,
• polysaccharide,
• lamella,
• event,
• moiety,
• component,
• coagulant,
• matter,
• emotion,
• mucopolysaccharide,
• substrate,
• seed,
• sheet,
• object,
• buffer,
• protein,
• issue,
• residue,
• material,
• carrier,
• agent,
• precursor,
• stuff,
• sugar,
• surface,
• metal,
• macromolecule,
• meson,
• ligand,
• colloid,
• structure,
• contamination,
• oligosaccharide,
• carbohydrate,
• drug,
• ion,
• surfactant,
• chemical,
• monomer,
• place,
• sorbent,
• salt,
• state,
• contaminant,
• particulate,
• polymer,
• gathering,
• clay,
• hadron,
• solute,
• entity,
• food,
• expense,
• cation,
• constituent,
• system,
• outlet,
• mineral,
• phospholipid,
• lepton,
• anion,
• lipid,