sexiness vs erotism

sexiness and erotism both are nouns.

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

As nouns, sexiness and erotism are synonyms defined as:

Other synonyms of sexiness include amativeness, amorousness, eroticism.

sexiness (noun)	erotism (noun)
The state or quality of being sexy, of possessing the traits of sexual appeal.	the arousal of feelings of sexual desire
the arousal of feelings of sexual desire	a state of anticipation of sexuality