posterior vs obscenity

posterior and obscenity both are nouns.

Word	Noun	Adjective	Verb	Adverb
posterior	Yes	Yes	No	No
obscenity	Yes	No	No	No

posterior (noun)	obscenity (noun)
the fleshy part of the human body that you sit on	an obscene act
a tooth situated at the back of the mouth	the trait of behaving in an obscene manner
	an offensive or indecent word or phrase

posterior (adjective)	obscenity (adjective)
located at or near or behind a part or near the end of a structure
coming at a subsequent time or stage