labium vs sexual practice

labium and sexual practice both are nouns.

Word	Noun	Adjective	Verb	Adverb
labium	Yes	No	No	No
sexual practice	Yes	No	No	No

labium (noun)	sexual practice (noun)
a liplike structure that bounds a bodily orifice (especially any of the four labiate folds of a woman's vulva)	activities associated with sexual intercourse