levy vs muster

levy and muster both are nouns.

Word	Noun	Adjective	Verb	Adverb
levy	Yes	No	Yes	No
muster	Yes	No	Yes	No

As nouns, muster is a hypernym of levy; that is, muster is a word with a broader meaning than levy:

Other hypernyms of levy include conscription, draft, selective service.

levy (noun)	muster (noun)
the act of drafting into military service	compulsory military service
a charge imposed and collected	a gathering of military personnel for duty

levy (verb)	muster (verb)
cause to assemble or enlist in military	call to duty, military service, jury duty, etc.
impose and collect	gather or bring together