spruce beer vs brewage

spruce beer and brewage both are nouns.

Word	Noun	Adjective	Verb	Adverb
spruce beer	Yes	No	No	No
brewage	Yes	No	No	No

As nouns, brewage is a hypernym of spruce beer; that is, brewage is a word with a broader meaning than spruce beer:

spruce beer: a brew made by fermenting molasses and other sugars with the sap of spruce trees (sometimes with malt)
brewage: drink made by steeping and boiling and fermenting rather than distilling

Other hypernyms of spruce beer include brew.

spruce beer (noun)	brewage (noun)
a brew made by fermenting molasses and other sugars with the sap of spruce trees (sometimes with malt)	drink made by steeping and boiling and fermenting rather than distilling