bottled gas vs liquefied petroleum gas

bottled gas and liquefied petroleum gas both are nouns.

Word	Noun	Adjective	Verb	Adverb
bottled gas	Yes	No	No	No
liquefied petroleum gas	Yes	No	No	No

As nouns, bottled gas and liquefied petroleum gas are synonyms defined as:

bottled gas and liquefied petroleum gas: hydrocarbon gases, usually propane or butane, kept under pressure

bottled gas (noun)	liquefied petroleum gas (noun)
hydrocarbon gases, usually propane or butane, kept under pressure	hydrocarbon gases, usually propane or butane, kept under pressure