sex vs missionary position

sex and missionary position both are nouns.

Word	Noun	Adjective	Verb	Adverb
sex	Yes	No	Yes	No
missionary position	Yes	No	No	No

sex (noun)	missionary position (noun)
activities associated with sexual intercourse	a position for sexual intercourse; a man and woman lie facing each other with the man on top; so-called because missionaries thought it the proper position for primitive peoples
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

sex (verb)	missionary position (verb)
tell the sex (of young chickens)
to evoke sexual feelings