Category Nuances for propane_gas:

• nonvolatile,
• efficient,
• light,
• limited,
• volatile,
• secondary,
• flammable,
• pure,
• conventional,
• commercial,
• combustible,
• available,
• inflammable,
• harmful,
• essential,
• explosive,
• compressed,
• industrial,

Simple Categories for propane_gas:

• fuel,
• agent,
• fluid,
• hydrocarbon,
• gas,
• material,
• amount,
• substance,
• refrigerant,