backside vs vulgarism

backside and vulgarism both are nouns.

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

backside (noun)	vulgarism (noun)
the fleshy part of the human body that you sit on	the quality of lacking taste and refinement
the side of an object that is opposite its front	an offensive or indecent word or phrase