liquor vs hard liquor

liquor and hard liquor both are nouns.

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

As nouns, liquor and hard liquor are synonyms defined as:

liquor and hard liquor: an alcoholic beverage that is distilled rather than fermented

Other synonyms of liquor include booze, hard drink, John Barleycorn, spirits, strong drink.

liquor (noun)	hard liquor (noun)
an alcoholic beverage that is distilled rather than fermented	an alcoholic beverage that is distilled rather than fermented
the liquid in which vegetables or meat have been cooked
a liquid substance that is a solution (or emulsion or suspension) used or obtained in an industrial process