ablution vs ritual

ablution and ritual both are nouns.

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

As nouns, ritual is a hypernym of ablution; that is, ritual is a word with a broader meaning than ablution:

Other hypernyms of ablution include lavation, wash, washing.

ablution (noun)	ritual (noun)
the ritual washing of a priest's hands or of sacred vessels	any customary observance or practice
	the prescribed procedure for conducting religious ceremonies
	stereotyped behavior

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