rum vs rummy

rum and rummy both are nouns.

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

As adjectives, rum and rummy are synonyms defined as:

Other synonyms of rum include curious, funny, odd, peculiar, queer, singular.

As nouns, rum and rummy are synonyms defined as:

rum and rummy: a card game based on collecting sets and sequences; the winner is the first to meld all their cards

rum (noun)	rummy (noun)
a card game based on collecting sets and sequences; the winner is the first to meld all their cards	a card game based on collecting sets and sequences; the winner is the first to meld all their cards
liquor distilled from fermented molasses	a chronic drinker

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