smack vs kiss

smack and kiss both are nouns.

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

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

Other hypernyms of smack include buss, osculation.

As verbs, kiss is a hypernym of smack; that is, kiss is a word with a broader meaning than smack:

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

Other hypernyms of smack include buss, osculate, snog.

smack (noun)	kiss (noun)
the act of smacking something; a blow delivered with an open hand	the act of caressing with the lips (or an instance thereof)
an enthusiastic kiss	a light glancing touch
street names for heroin	any of several bite-sized candies
a sailing ship (usually rigged like a sloop or cutter) used in fishing and sailing along the coast	a cookie made of egg whites and sugar
the taste experience when a savoury condiment is taken into the mouth
a blow from a flat object (as an open hand)

smack (verb)	kiss (verb)
press (the lips) together and open (the lips) noisily, as in eating	touch with the lips or press the lips (against someone's mouth or other body part) as an expression of love, greeting, etc.
kiss lightly	touch lightly or gently
deliver a hard blow to
have a distinctive or characteristic taste
have an element suggestive (of something)

smack (adverb)	kiss (adverb)
directly