sexiness vs pruriency

sexiness and pruriency both are nouns.

Word	Noun	Adjective	Verb	Adverb
sexiness	Yes	No	No	No
pruriency	Yes	No	No	No

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

Other hyponyms of sexiness include carnality, lasciviousness, lubricity, prurience.

sexiness (noun)	pruriency (noun)
The state or quality of being sexy, of possessing the traits of sexual appeal.	feeling morbid sexual desire or a propensity to lewdness
the arousal of feelings of sexual desire