Category Nuances for natural_gas:

• combustible,
• gaseous,
• primary,
• foreign,
• sensitive,
• common,
• additional,
• hazardous,
• metallic,
• rare,
• residential,
• raw,
• rich,
• organic,
• vital,
• linear,
• flammable,
• corrosive,
• diverse,
• conventional,
• seasonal,
• related,
• explosive,
• down,
• carbonaceous,
• under,
• key,
• useful,
• modern,
• poisonous,
• supplemental,
• familiar,
• ordinary,
• limited,
• essential,
• costly,
• direct,
• geological,
• pure,
• local,
• commercial,
• medium,
• supporting,
• dangerous,
• solid,
• unstable,
• desirable,
• volatile,
• acid,
• toxic,
• world,
• specified,
• tangible,
• abundant,
• dry,
• frozen,
• corporate,
• up,
• public,
• inexpensive,
• sedimentary,
• natural,
• animal,
• homogeneous,
• nonrenewable,
• neutral,
• base,
• fluid,
• auxiliary,
• personal,
• external,
• renewable,
• competitive,
• alternative,
• liquefied,
• precious,
• usable,
• cold,
• strategic,
• manufactured,
• marketable,
• crude,
• virgin,
• scientific,
• basic,
• geologic,
• harmful,
• aggressive,
• synthetic,
• simple,
• good,
• practical,
• available,
• home,
• automotive,
• inflammable,
• consumable,
• new,
• technical,
• industrial,
• liquid,
• convenient,
• dispersed,
• light,
• mixed,
• physical,
• needed,
• liquified,
• underground,
• indirect,
• vehicular,
• subsurface,
• domestic,
• upset,
• expensive,
• starting,
• everyday,
• extraneous,
• ignitable,
• indigenous,
• private,
• compressible,
• important,
• special,
• ambient,
• driving,
• popular,
• lighter,
• fossil,
• similar,
• secondary,
• motor,
• complex,
• standard,
• valuable,
• individual,
• several,
• extra,
• cleaner,
• major,
• chemical,
• efficient,
• large,
• flexible,
• real,
• possible,
• supplementary,
• friendly,
• stable,
• exempt,
• nitrogenous,
• single,
• clean,
• inorganic,
• actual,
• technological,
• environmental,
• buoyant,
• reactive,
• atmospheric,
• cheap,
• crucial,
• compressed,
• critical,
• metal,
• out,
• traditional,

Simple Categories for natural_gas:

• fuel,
• property,
• installation,
• gas,
• formation,
• commodity,
• entity,
• fixture,
• system,
• quality,
• ownership,
• fluid,
• quantity,
• material,
• state,
• nature,
• hazard,
• substance,
• danger,
• hydrogen,
• appliance,
• unit,
• liquid,
• hydrocarbon,
• structure,
• fumes,
• combustible,
• land,
• rock,
• development,
• chemical,
• facility,
• substrate,
• change,
• mineral,
• agent,
• item,
• ground,
• atmosphere,
• fertilizer,
• mixture,
• carrier,
• matter,
• medium,
• form,
• component,
• process,
• condition,
• deposit,
• contaminant,
• compound,