celebrant vs doer

celebrant and doer both are nouns.

Word	Noun	Adjective	Verb	Adverb
celebrant	Yes	No	No	No
doer	Yes	No	No	No

As nouns, doer is a hypernym of celebrant; that is, doer is a word with a broader meaning than celebrant:

Other hypernyms of celebrant include actor, worker.

celebrant (noun)	doer (noun)
an officiating priest celebrating the Eucharist	a person who acts and gets things done
a person who is celebrating