missionary position vs sexual practice

missionary position and sexual practice both are nouns.

Word	Noun	Adjective	Verb	Adverb
missionary position	Yes	No	No	No
sexual practice	Yes	No	No	No

missionary position (noun)	sexual practice (noun)
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	activities associated with sexual intercourse