bottled gas vs hydrocarbon

bottled gas and hydrocarbon both are nouns.

Word	Noun	Adjective	Verb	Adverb
bottled gas	Yes	No	No	No
hydrocarbon	Yes	No	No	No

As nouns, hydrocarbon is a hypernym of bottled gas; that is, hydrocarbon is a word with a broader meaning than bottled gas:

bottled gas: hydrocarbon gases, usually propane or butane, kept under pressure
hydrocarbon: an organic compound containing only carbon and hydrogen

Other hypernyms of bottled gas include gas.

bottled gas (noun)	hydrocarbon (noun)
hydrocarbon gases, usually propane or butane, kept under pressure	an organic compound containing only carbon and hydrogen