alcoholic vs rummy

alcoholic and rummy both are nouns.

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

As nouns, rummy is a hypernym of alcoholic; that is, rummy is a word with a broader meaning than alcoholic:

Other hypernyms of alcoholic include drunk, drunkard, inebriate, sot, wino.

alcoholic (noun)	rummy (noun)
a person who drinks alcohol to excess habitually	a card game based on collecting sets and sequences; the winner is the first to meld all their cards
	a chronic drinker

alcoholic (adjective)	rummy (adjective)
characteristic of or containing alcohol	beyond or deviating from the usual or expected
addicted to alcohol