vestment vs pontifical

vestment and pontifical both are nouns.

Word	Noun	Adjective	Verb	Adverb
vestment	Yes	No	No	No
pontifical	Yes	Yes	No	No

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

vestment: gown (especially ceremonial garments) worn by the clergy
pontifical: the vestments and other insignia of a pontiff (especially a bishop)

Other hyponyms of vestment include alb, cassock, chasuble, humeral veil, veil, pallium, surplice.

vestment (noun)	pontifical (noun)
gown (especially ceremonial garments) worn by the clergy	the vestments and other insignia of a pontiff (especially a bishop)

vestment (adjective)	pontifical (adjective)
	denoting or governed by or relating to a bishop or bishops
	proceeding from or ordered by or subject to a pope or the papacy regarded as the successor of the Apostles
	puffed up with vanity