lager vs bivouac

lager and bivouac both are nouns.

Word	Noun	Adjective	Verb	Adverb
lager	Yes	No	No	No
bivouac	Yes	No	Yes	No

As nouns, bivouac is a hypernym of lager; that is, bivouac is a word with a broader meaning than lager:

Other hypernyms of lager include camp, cantonment, encampment.

lager (noun)	bivouac (noun)
a camp defended by a circular formation of wagons	temporary living quarters specially built by the army for soldiers
a general term for beer made with bottom fermenting yeast (usually by decoction mashing); originally it was brewed in March or April and matured until September	a site where people on holiday can pitch a tent

lager (verb)	bivouac (verb)
	live in or as if in a tent