kiss vs biscuit

kiss and biscuit both are nouns.

Word	Noun	Adjective	Verb	Adverb
kiss	Yes	No	Yes	No
biscuit	Yes	No	No	No

As nouns, biscuit is a hypernym of kiss; that is, biscuit is a word with a broader meaning than kiss:

Other hypernyms of kiss include cookie, cooky.

kiss (noun)	biscuit (noun)
the act of caressing with the lips (or an instance thereof)	small round bread leavened with baking-powder or soda
a light glancing touch	any of various small flat sweet cakes
any of several bite-sized candies
a cookie made of egg whites and sugar

kiss (verb)	biscuit (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