pure vs virtuous

pure and virtuous both are adjectives.

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

As adjectives, pure and virtuous are synonyms defined as:

Other synonyms of pure include vestal, virgin, virginal.

pure (adjective)	virtuous (adjective)
(used of persons or behaviors) having no faults; sinless	morally excellent
free of extraneous elements of any kind	in a state of sexual virginity
(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