sexual practice vs extracurricular

sexual practice is a noun but extracurricular is not a noun.

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

sexual practice (noun)	extracurricular (noun)
activities associated with sexual intercourse

sexual practice (adjective)	extracurricular (adjective)
	characterized by adultery
	outside the regular duties of your job or profession
	outside the regular academic curriculum