sexual activity vs oral contraceptive

sexual activity and oral contraceptive both are nouns.

Word	Noun	Adjective	Verb	Adverb
sexual activity	Yes	No	No	No
oral contraceptive	Yes	No	No	No

sexual activity (noun)	oral contraceptive (noun)
activities associated with sexual intercourse	a contraceptive in the form of a pill containing estrogen and progestin to inhibit ovulation and so prevent conception