erotism vs pruriency

erotism and pruriency both are nouns.

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

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

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

erotism (noun)	pruriency (noun)
the arousal of feelings of sexual desire	feeling morbid sexual desire or a propensity to lewdness
a state of anticipation of sexuality