Modifiers matching impurity:

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

Simple categories matching lightweight:

• material,
• application,
• item,
• shoes,
• sword,
• hardware,
• particle,
• product,
• object,
• fibre,
• article,
• fabric,
• fluid,
• trailer,
• unit,
• framework,
• waste,
• aggregate,
• weaponry,
• clothing,
• ingredient,
• rock,
• parcel,
• abrasive,
• beads,
• garment,
• weapon,
• glasses,
• assembly,
• lense,
• structure,
• hat,
• plastic,
• metal,
• fixture,
• alloy,
• creation,
• decoration,
• construction,
• mineral,
• commodity,
• undergarment,
• vest,
• blanket,
• element,
• contaminant,
• device,
• atom,
• elements,
• battery,
• string,
• web,
• sign,
• computer,
• component,
• cloth,
• outerwear,
• equipment,
• tie,
• vehicle,
• food,
• strand,
• textile,
• soil,
• matter,
• substance,
• silks,
• gas,
• issue,
• building,
• container,
• cotton,
• filler,
• covering,
• ball,
• foam,
• compound,
• implement,
• papers,
• molecule,
• blade,
• leather,
• debris,
• thing,
• packing,
• tire,
• system,
• impurity,
• tool,
• clothes,
• substrate,
• rammer,
• oil,
• part,
• support,
• utensil,
• bird,
• surface,
• furniture,
• sled,
• wall,
• plate,
• cleaner,
• paper,
• yarn,
• mail,
• firearm,
• box,
• medium,
• apparel,
• wood,
• chains,
• helmet,
• head,
• transport,