friend with benefit vs friend

friend with benefit and friend both are nouns.

Word	Noun	Adjective	Verb	Adverb
friend with benefit	Yes	No	No	No
friend	Yes	No	No	No

As nouns, friend is a hypernym of friend with benefit; that is, friend is a word with a broader meaning than friend with benefit:

friend with benefit (noun)	friend (noun)
A friend with whom you have sex	a person you know well and regard with affection and trust
	a person with whom you are acquainted
	an associate who provides cooperation or assistance
	a person who backs a politician or a team etc.