hard liquor vs alcohol

hard liquor and alcohol both are nouns.

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

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

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

hard liquor (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