oral contraceptive vs sexual activity

oral contraceptive and sexual activity both are nouns.

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

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