salaciousness vs salacity

salaciousness and salacity both are nouns.

Word	Noun	Adjective	Verb	Adverb
salaciousness	Yes	No	No	No
salacity	Yes	No	No	No

As nouns, salaciousness and salacity are synonyms defined as:

Other synonyms of salaciousness include bawdiness, lewdness, obscenity.

salaciousness (noun)	salacity (noun)
the trait of behaving in an obscene manner	the trait of behaving in an obscene manner