usage vs Germanism

usage and Germanism both are nouns.

Word	Noun	Adjective	Verb	Adverb
usage	Yes	No	No	No
Germanism	Yes	No	No	No

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

Other hyponyms of usage include Americanism, Anglicism, Britishism, consuetude, couvade, habit, use, hijab, rite, ritual.

usage (noun)	Germanism (noun)
the act of using	a custom that is peculiar to Germany or its citizens
accepted or habitual practice
the customary manner in which a language (or a form of a language) is spoken or written