lewdness vs salaciousness

lewdness and salaciousness both are nouns.

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

As nouns, lewdness and salaciousness are synonyms defined as:

Other synonyms of lewdness include bawdiness, obscenity, salacity.

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