extracurricular vs sexual activity

extracurricular is not a noun while sexual activity is a noun.

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

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

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