affair vs ceremonial

affair and ceremonial both are nouns.

Word	Noun	Adjective	Verb	Adverb
affair	Yes	No	No	No
ceremonial	Yes	Yes	No	No

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

affair (noun)	ceremonial (noun)
a vaguely specified concern	a formal event performed on a special occasion
a formal or official social gathering or ceremony of people
a usually secretive or illicit sexual relationship

affair (adjective)	ceremonial (adjective)
	marked by pomp or ceremony or formality