vulgarism vs commonness

vulgarism and commonness both are nouns.

Word	Noun	Adjective	Verb	Adverb
vulgarism	Yes	No	No	No
commonness	Yes	No	No	No

As nouns, vulgarism and commonness are synonyms defined as:

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

vulgarism (noun)	commonness (noun)
the quality of lacking taste and refinement	ordinariness as a consequence of being frequent and commonplace
an offensive or indecent word or phrase	sharing of common attributes
	the quality of lacking taste and refinement
	the state of being that is commonly observed