Modifiers matching hydrocarbon:

• nonpolar,
• light,
• conjugated,
• airborne,
• aromatic,
• dangerous,
• stable,
• saturated,
• minor,
• lighter,
• liquid,
• volatile,
• gaseous,
• regulated,
• useful,
• acetylenic,
• lower,
• ordinary,
• unsaturated,
• dissolved,
• valuable,
• individual,
• heavier,
• greasy,
• synthetic,
• commercial,
• common,
• cheap,
• aliphatic,
• simple,
• nitrogenous,
• dilute,
• cyclic,
• heavy,
• carcinogenic,
• viscous,
• polygonal,
• industrial,
• fluid,
• toxic,
• essential,
• hazardous,
• combustible,
• inert,
• desirable,
• liquifiable,
• planar,
• conventional,
• organic,
• molecular,
• flammable,
• frozen,
• clean,
• soluble,
• neutral,
• refined,
• familiar,
• hydrophobic,
• hard,
• particular,
• available,
• reactive,
• intermediate,
• single,
• pure,
• alternative,
• underground,
• residual,
• basic,
• complex,
• important,
• complicated,
• linear,
• natural,
• bound,
• main,
• solid,
• supercritical,
• dark,
• floating,
• model,
• typical,
• liquefied,
• vaporizable,
• small,
• acyclic,
• base,

Simple categories matching clean:

• grain,
• surface,
• vegetable,
• item,
• tubing,
• area,
• liquid,
• activity,
• fabric,
• electricity,
• gutter,
• material,
• soil,
• container,
• technology,
• semiconductor,
• screen,
• solvent,
• paper,
• water,
• object,
• string,
• meat,
• atmosphere,
• animal,
• metal,
• property,
• article,
• wastewater,
• appliance,
• receptacle,
• service,
• uniform,
• equipment,
• aggregate,
• work,
• runoff,
• club,
• hay,
• cylinder,
• abrasive,
• production,
• fuel,
• source,
• textile,
• fish,
• fluid,
• comestible,
• fixture,
• utensil,
• hydrocarbon,
• extra,
• design,
• tool,
• inside,
• component,
• system,
• conduit,
• business,
• product,
• air,
• organs,
• matter,
• ingredient,
• machine,
• deposit,
• effort,
• part,
• aroma,
• drape,
• bird,
• contaminant,
• energy,
• building,
• facility,
• sand,
• location,
• bedding,
• pollutant,
• fun,
• thing,
• furniture,
• residue,
• gemstone,
• floor,
• instrument,
• waterway,
• plate,
• gem,
• stain,
• dressing,
• sediment,
• ground,
• seed,
• debris,
• salt,
• bones,
• particle,
• loan,
• jewel,
• corpus,
• environment,
• sample,
• green,
• medium,
• laundry,
• amp,
• procedure,
• room,
• cloth,
• stone,
• place,
• veggie,
• vessel,
• substance,
• space,
• structure,
• territory,
• brush,
• lettuce,
• clothing,
• artifact,
• mixer,
• garment,
• audio,
• apparel,
• waste,
• industry,
• fiber,
• board,
• gas,
• bottle,
• line,
• device,
• solid,
• food,
• substrate,
• piece,
• sport,
• feature,
• supply,
• lake,
• linen,
• jar,