Modifiers matching gas:

• auxiliary,
• inert,
• chemical,
• rare,
• protective,
• weak,
• combustible,
• noble,
• ionic,
• pure,
• airborne,
• dry,
• real,
• lightweight,
• technical,
• flammable,
• acid,
• saturated,
• obnoxious,
• buoyant,
• consumable,
• polar,
• biogenic,
• explosive,
• volatile,
• rich,
• synthetic,
• medicinal,
• safe,
• toxic,
• malign,
• dense,
• industrial,
• indoor,
• respiratory,
• suffocating,
• diatomic,
• paramagnetic,
• medium,
• starting,
• artificial,
• unstable,
• divalent,
• cryogenic,
• major,
• mobile,
• innocuous,
• desirable,
• detrimental,
• ambient,
• poisonous,
• familiar,
• abundant,
• neutral,
• propellant,
• warm,
• base,
• additional,
• fixed,
• floating,
• medical,
• convenient,
• individual,
• hydrophilic,
• external,
• harmful,
• absorptive,
• atomic,
• inexpensive,
• injurious,
• relevant,
• useful,
• available,
• metal,
• secondary,
• strong,
• carbonaceous,
• minor,
• manufactured,
• incombustible,
• suitable,
• luminous,
• dangerous,
• valuable,
• vesicant,
• damaging,
• radioactive,
• sulfurous,
• inflammable,
• number,
• incoming,
• hot,
• oxidative,
• invisible,
• compressible,
• dusty,
• vital,
• impure,
• extraneous,
• raw,
• active,
• compressed,
• complex,
• heavy,
• organic,
• transparent,
• interfering,
• traditional,
• nonpolar,
• unsaturated,
• special,
• oxidizable,
• model,
• reactive,
• mental,
• electropositive,
• liquified,
• clean,
• supportive,
• soluble,
• diffusing,
• essential,
• acidic,
• heavier,
• edible,
• cheap,
• off,
• irritating,
• liquid,
• environmental,
• refrigerant,
• controlled,
• simple,
• classical,
• noncombustible,
• deadly,
• thin,
• unwanted,
• beneficial,
• diamagnetic,
• noxious,
• working,
• dilute,
• undesirable,
• heated,
• hazardous,
• standard,
• warming,
• atmospheric,
• out,
• alkaline,
• commercial,
• supporting,
• rarefied,
• scientific,
• cold,
• unique,
• identifiable,
• foreign,
• common,
• ignitable,
• separate,
• under,
• relativistic,
• moving,
• supplemental,
• single,
• insoluble,
• frozen,
• benign,
• faster,
• liquefied,
• miscellaneous,
• malodorous,
• elemental,
• dissolved,
• natural,
• hydrophobic,
• corrosive,
• nonflammable,
• harmless,
• basic,
• residual,
• passive,
• molecular,
• inorganic,
• tenuous,
• automotive,
• fast,
• surrounding,
• expensive,
• key,
• stable,
• monoatomic,
• carcinogenic,
• refrigerated,
• anthropogenic,
• ordinary,
• electronegative,
• light,
• conductive,
• deleterious,
• important,
• aggressive,
• conventional,
• supercritical,
• particular,
• critical,
• monatomic,
• permanent,
• nontoxic,
• lighter,
• small,
• metabolic,
• mixed,
• popular,

Simple categories matching heavier:

• article,
• fabric,
• pasta,
• material,
• component,
• furniture,
• implement,
• ball,
• utensil,
• atom,
• halogen,
• item,
• stuff,
• impurity,
• metal,
• wood,
• meal,
• post,
• industry,
• bird,
• vehicle,
• substance,
• equipment,
• particle,
• contaminant,
• fastener,
• medium,
• construction,
• meson,
• linen,
• sport,
• soil,
• glove,
• pellet,
• ion,
• object,
• waste,
• dirtiness,
• paint,
• instrument,
• aggregate,
• knit,
• fuel,
• filament,
• job,
• commodity,
• tool,
• elements,
• line,
• conductor,
• leaf,
• residue,
• fluid,
• volatile,
• music,
• piece,
• fare,
• sediment,
• stain,
• container,
• source,
• body,
• papers,
• gear,
• cake,
• thread,
• bread,
• fibre,
• stock,
• deposit,
• constituent,
• ship,
• vegetable,
• clothing,
• hydrocarbon,
• tm,
• contamination,
• fish,
• scent,
• mineral,
• machinery,
• distillate,
• clothes,
• garment,
• sweetener,
• system,
• chemical,
• grain,
• rock,
• sawdust,
• mixture,
• lepton,
• fraction,
• compound,
• footwear,
• work,
• structure,
• weaponry,
• camera,
• isotope,
• foundation,
• load,
• alcohol,
• order,
• hadron,
• gas,
• hardwood,
• paper,
• area,
• needle,
• thing,
• artifact,
• machine,
• decoration,
• armament,
• product,
• electron,
• solid,
• car,
• substrate,
• part,
• plant,
• alkane,
• surface,
• aircraft,
• weapon,
• meat,
• element,
• alloy,
• style,
• package,
• food,
• textile,
• unit,
• dish,
• transport,
• agent,
• activity,
• fixture,
• liquid,
• congener,
• arms,