tail end vs sexual practice

tail end and sexual practice both are nouns.

Word	Noun	Adjective	Verb	Adverb
tail end	Yes	No	No	No
sexual practice	Yes	No	No	No

tail end (noun)	sexual practice (noun)
the fleshy part of the human body that you sit on	activities associated with sexual intercourse
any projection that resembles the tail of an animal
the time of the last part of something