Category Nuances for propane_gas:

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

Simple Categories for propane_gas:

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