obscenity vs tail end

obscenity and tail end both are nouns.

Word	Noun	Adjective	Verb	Adverb
obscenity	Yes	No	No	No
tail end	Yes	No	No	No

obscenity (noun)	tail end (noun)
an obscene act	the fleshy part of the human body that you sit on
the trait of behaving in an obscene manner	any projection that resembles the tail of an animal
an offensive or indecent word or phrase	the time of the last part of something