sex vs osculation

sex and osculation both are nouns.

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

sex (noun)	osculation (noun)
activities associated with sexual intercourse	the act of caressing with the lips (or an instance thereof)
the properties that distinguish organisms on the basis of their reproductive roles	(mathematics) a contact of two curves (or two surfaces) at which they have a common tangent
all of the feelings resulting from the urge to gratify sexual impulses
either of the two categories (male or female) into which most organisms are divided

sex (verb)	osculation (verb)
tell the sex (of young chickens)
to evoke sexual feelings