drunkard vs alcoholic

drunkard and alcoholic both are nouns.

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

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

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

drunkard (noun)	alcoholic (noun)
a chronic drinker	a person who drinks alcohol to excess habitually

drunkard (adjective)	alcoholic (adjective)
	characteristic of or containing alcohol
	addicted to alcohol