grossness vs vulgarity

grossness and vulgarity both are nouns.

Word	Noun	Adjective	Verb	Adverb
grossness	Yes	No	No	No
vulgarity	Yes	No	No	No

As nouns, grossness and vulgarity are synonyms defined as:

Other synonyms of grossness include coarseness, commonness, raunch, vulgarism.

grossness (noun)	vulgarity (noun)
the quality of lacking taste and refinement	the quality of lacking taste and refinement