kiss vs sex activity

kiss and sex activity both are nouns.

Word	Noun	Adjective	Verb	Adverb
kiss	Yes	No	Yes	No
sex activity	Yes	No	No	No

kiss (noun)	sex activity (noun)
the act of caressing with the lips (or an instance thereof)	activities associated with sexual intercourse
a light glancing touch
any of several bite-sized candies
a cookie made of egg whites and sugar

kiss (verb)	sex activity (verb)
touch with the lips or press the lips (against someone's mouth or other body part) as an expression of love, greeting, etc.
touch lightly or gently