strong drink vs rum

strong drink and rum both are nouns.

Word	Noun	Adjective	Verb	Adverb
strong drink	Yes	No	No	No
rum	Yes	Yes	No	No

As nouns, rum is a hyponym of strong drink; that is, rum is a word with a more specific, narrower meaning than strong drink:

strong drink (noun)	rum (noun)
an alcoholic beverage that is distilled rather than fermented	a card game based on collecting sets and sequences; the winner is the first to meld all their cards
	liquor distilled from fermented molasses

strong drink (adjective)	rum (adjective)
	beyond or deviating from the usual or expected