osculation vs buss

osculation and buss both are nouns.

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

As nouns, osculation and buss are synonyms defined as:

osculation and buss: the act of caressing with the lips (or an instance thereof)

Other synonyms of osculation include kiss.

osculation (noun)	buss (noun)
the act of caressing with the lips (or an instance thereof)	the act of caressing with the lips (or an instance thereof)
(mathematics) a contact of two curves (or two surfaces) at which they have a common tangent

osculation (verb)	buss (verb)
	touch with the lips or press the lips (against someone's mouth or other body part) as an expression of love, greeting, etc.