vestal vs pure

vestal is a noun but pure is not a noun.

Word	Noun	Adjective	Verb	Adverb
vestal	Yes	Yes	No	No
pure	No	Yes	No	No

As adjectives, vestal and pure are synonyms defined as:

Other synonyms of vestal include virgin, virginal, virtuous.

vestal (noun)	pure (noun)
a chaste woman

vestal (adjective)	pure (adjective)
of or relating to Vesta	(used of persons or behaviors) having no faults; sinless
in a state of sexual virginity	free of extraneous elements of any kind
	(of color) being chromatically pure; not diluted with white or grey or black
	in a state of sexual virginity
	free from discordant qualities
	concerned with theory and data rather than practice; opposed to applied
	without qualification; used informally as (often pejorative) intensifiers