ritual vs rite

ritual and rite both are nouns.

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

As nouns, ritual and rite are synonyms defined as:

ritual (noun)	rite (noun)
any customary observance or practice	any customary observance or practice
the prescribed procedure for conducting religious ceremonies	an established ceremony prescribed by a religion
stereotyped behavior

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