Modifiers matching fuel:

• important,
• solid,
• vegetative,
• liquid,
• harmful,
• combustible,
• synthetic,
• corrosive,
• motor,
• organic,
• heavy,
• typical,
• desirable,
• common,
• special,
• unprocessed,
• conventional,
• damaging,
• fine,
• traditional,
• taxable,
• gaseous,
• uniform,
• flammable,
• specialized,
• light,
• renewable,
• dirty,
• safe,
• miscellaneous,
• thermal,
• ordinary,
• industrial,
• regular,
• down,
• mundane,
• powdered,
• actual,
• hard,
• base,
• manufactured,
• wet,
• efficient,
• modern,
• dirtier,
• benign,
• toxic,
• macromolecular,
• consumable,
• pure,
• natural,
• chemical,
• strategic,
• lighter,
• compressed,
• exotic,
• unhealthy,
• main,
• familiar,
• particular,
• costly,
• heavier,
• thinner,
• beneficial,
• indigenous,
• inexpensive,
• abrasive,
• odd,
• dense,
• clean,
• vaporizable,
• suitable,
• refined,
• metabolic,
• useful,
• alternative,
• future,
• unwanted,
• up,
• single,
• smaller,
• inflammable,
• reactive,
• precious,
• simple,
• standard,
• granular,
• residential,
• old,
• propellant,
• practical,
• small,
• primary,
• loose,
• friendly,
• inhomogeneous,
• biological,
• cleaner,
• usable,
• nonwoody,
• soluble,
• possible,
• innovative,
• commercial,
• local,
• discrete,
• nonpolar,
• cheap,
• valuable,
• needed,
• competitive,
• oxidizable,
• major,
• ignitable,
• available,
• rich,
• key,
• intermediate,
• particulate,
• individual,
• fibrous,
• residual,
• domestic,
• indoor,
• appropriate,
• automotive,
• direct,
• foreign,
• difficult,
• destructive,
• supplementary,
• nonrenewable,
• supplemental,
• unconventional,
• porous,
• artificial,
• explosive,
• normal,
• extra,
• technical,
• cryogenic,
• homogeneous,
• dangerous,
• vehicular,
• dead,
• several,
• sustainable,
• raw,
• sensitive,
• commonplace,
• hazardous,
• nuclear,
• supporting,
• complex,
• convenient,
• expensive,
• compressible,
• advanced,
• new,
• dry,
• basic,
• volatile,
• physiological,
• auxiliary,
• real,
• fluid,
• starting,
• off,
• abundant,
• diverse,
• essential,
• secondary,
• medical,
• environmental,
• separate,
• herbaceous,
• carbonaceous,
• finished,

Simple categories matching residual:

• material,
• constituent,
• component,
• fumigant,
• solid,
• salt,
• product,
• waste,
• metal,
• fuel,
• contaminant,
• hydrocarbon,
• toner,
• gas,
• ion,
• soil,
• disease,
• nutrient,
• herbicide,
• resin,
• mineral,
• group,
• volatile,
• structure,
• substance,
• fiber,
• sediment,
• carbon,
• chemical,
• contamination,
• impurity,
• film,
• insecticide,
• affinity,
• solvent,
• pesticide,
• bin,
• liquid,
• detritus,
• deposit,
• compound,
• stress,
• oil,
• flow,
• reactant,
• halogen,
• particle,
• organism,
• monomer,