erotism vs amorousness

erotism and amorousness both are nouns.

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

As nouns, erotism and amorousness are synonyms defined as:

Other synonyms of erotism include amativeness, eroticism, sexiness.

erotism (noun)	amorousness (noun)
the arousal of feelings of sexual desire	a feeling of love or fondness
a state of anticipation of sexuality	the arousal of feelings of sexual desire