arak vs hard liquor

arak and hard liquor both are nouns.

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

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

arak: any of various strong liquors distilled from the fermented sap of toddy palms or from fermented molasses
hard liquor: an alcoholic beverage that is distilled rather than fermented

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

arak (noun)	hard liquor (noun)
any of various strong liquors distilled from the fermented sap of toddy palms or from fermented molasses	an alcoholic beverage that is distilled rather than fermented