brew vs alcohol

brew and alcohol both are nouns.

Word	Noun	Adjective	Verb	Adverb
brew	Yes	No	Yes	No
alcohol	Yes	No	No	No

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

brew: drink made by steeping and boiling and fermenting rather than distilling
alcohol: a liquor or brew containing alcohol as the active agent

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

brew (noun)	alcohol (noun)
drink made by steeping and boiling and fermenting rather than distilling	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

brew (verb)	alcohol (verb)
sit or let sit in boiling water so as to extract the flavor
prepare by brewing