arrack vs strong drink

arrack and strong drink both are nouns.

Word	Noun	Adjective	Verb	Adverb
arrack	Yes	No	No	No
strong drink	Yes	No	No	No

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

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

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

arrack (noun)	strong drink (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