salaciousness vs lewdness

salaciousness and lewdness both are nouns.

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

As nouns, salaciousness and lewdness are synonyms defined as:

Other synonyms of salaciousness include bawdiness, obscenity, salacity.

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