Anglicism vs usage

Anglicism and usage both are nouns.

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

As nouns, usage is a hypernym of Anglicism; that is, usage is a word with a broader meaning than Anglicism:

Other hypernyms of Anglicism include custom, usance.

Anglicism (noun)	usage (noun)
a custom that is peculiar to England or its citizens	the act of using
an expression that is used in Great Britain (especially as contrasted with American English)	accepted or habitual practice
	the customary manner in which a language (or a form of a language) is spoken or written