Modifiers matching hydrocarbon:

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

Simple categories matching gaseous:

• precursor,
• hydrocarbon,
• flow,
• carrier,
• fuel,
• fumigant,
• anesthetic,
• salt,
• fluid,
• compound,
• substance,
• contamination,
• chemical,
• anaesthetic,
• constituent,
• waste,
• olefin,
• system,
• matter,
• component,
• cyanide,
• agent,
• buffer,
• form,
• contaminant,
• plasma,
• mass,
• phenomenon,
• alkyne,
• monomer,
• material,
• substrate,
• acid,
• state,
• odor,
• impurity,
• sulphide,
• medium,
• mixture,
• object,
• atmosphere,
• body,
• oxide,
• alkane,
• reactant,
• pollutant,
• molecule,