rum vs liquor

rum and liquor both are nouns.

Word	Noun	Adjective	Verb	Adverb
rum	Yes	Yes	No	No
liquor	Yes	No	No	No

As nouns, liquor is a hypernym of rum; that is, liquor is a word with a broader meaning than rum:

Other hypernyms of rum include booze, hard drink, hard liquor, John Barleycorn, spirits, strong drink.

rum (noun)	liquor (noun)
a card game based on collecting sets and sequences; the winner is the first to meld all their cards	an alcoholic beverage that is distilled rather than fermented
liquor distilled from fermented molasses	the liquid in which vegetables or meat have been cooked
	a liquid substance that is a solution (or emulsion or suspension) used or obtained in an industrial process

rum (adjective)	liquor (adjective)
beyond or deviating from the usual or expected