posterior vs filth

posterior and filth both are nouns.

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

posterior (noun)	filth (noun)
the fleshy part of the human body that you sit on	an offensive or indecent word or phrase
a tooth situated at the back of the mouth	a state characterized by foul or disgusting dirt and refuse
	anything regarded as making something unclean
	any substance considered disgustingly foul or unpleasant

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