roll in the hay vs sex

roll in the hay and sex both are nouns.

Word	Noun	Adjective	Verb	Adverb
roll in the hay	Yes	No	Yes	No
sex	Yes	No	Yes	No

roll in the hay (noun)	sex (noun)
slang for sexual intercourse	activities associated with sexual intercourse
	the properties that distinguish organisms on the basis of their reproductive roles
	all of the feelings resulting from the urge to gratify sexual impulses
	either of the two categories (male or female) into which most organisms are divided

roll in the hay (verb)	sex (verb)
have sexual intercourse with	tell the sex (of young chickens)
	to evoke sexual feelings