buss vs smooch

buss and smooch both are nouns.

Word	Noun	Adjective	Verb	Adverb
buss	Yes	No	Yes	No
smooch	Yes	No	Yes	No

As nouns, smooch is a hyponym of buss; that is, smooch is a word with a more specific, narrower meaning than buss:

Other hyponyms of buss include smack, deep kiss, French kiss, soul kiss, peck.

buss (noun)	smooch (noun)
the act of caressing with the lips (or an instance thereof)	an enthusiastic kiss

buss (verb)	smooch (verb)
touch with the lips or press the lips (against someone's mouth or other body part) as an expression of love, greeting, etc.	snuggle and lie in a position where one person faces the back of the others