hard drink vs alcohol

hard drink and alcohol both are nouns.

Word	Noun	Adjective	Verb	Adverb
hard drink	Yes	No	No	No
alcohol	Yes	No	No	No

As nouns, alcohol is a hypernym of hard drink; that is, alcohol is a word with a broader meaning than hard drink:

Other hypernyms of hard drink include alcoholic beverage, alcoholic drink, inebriant, intoxicant.

hard drink (noun)	alcohol (noun)
an alcoholic beverage that is distilled rather than fermented	a liquor or brew containing alcohol as the active agent
	any of a series of volatile hydroxyl compounds that are made from hydrocarbons by distillation