usage vs ritual

usage and ritual both are nouns.

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

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

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

usage (noun)	ritual (noun)
the act of using	any customary observance or practice
accepted or habitual practice	the prescribed procedure for conducting religious ceremonies
the customary manner in which a language (or a form of a language) is spoken or written	stereotyped behavior

usage (adjective)	ritual (adjective)
	of or relating to or employed in social rites or rituals
	of or relating to or characteristic of religious rituals