alcohol vs brewage

alcohol and brewage both are nouns.

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

As nouns, brewage is a hyponym of alcohol; that is, brewage is a word with a more specific, narrower meaning than alcohol:

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

alcohol (noun)	brewage (noun)
a liquor or brew containing alcohol as the active agent	drink made by steeping and boiling and fermenting rather than distilling
any of a series of volatile hydroxyl compounds that are made from hydrocarbons by distillation