lush vs drunk

lush and drunk both are nouns.

Word	Noun	Adjective	Verb	Adverb
lush	Yes	Yes	No	No
drunk	Yes	Yes	No	No

As nouns, drunk is a hypernym of lush; that is, drunk is a word with a broader meaning than lush:

Other hypernyms of lush include drunkard, inebriate, rummy, sot, wino.

lush (noun)	drunk (noun)
a person who drinks alcohol to excess habitually	a chronic drinker
	someone who is intoxicated

lush (adjective)	drunk (adjective)
produced or growing in extreme abundance	stupefied or excited by a chemical substance (especially alcohol)
tender and full of juice	as if under the influence of alcohol
ostentatiously rich and superior in quality
having strong sexual appeal