rummy vs alcoholic

rummy and alcoholic both are nouns.

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

As nouns, alcoholic is a hyponym of rummy; that is, alcoholic is a word with a more specific, narrower meaning than rummy:

Other hyponyms of rummy include alky, boozer, dipsomaniac, lush, soaker, souse.

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

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