wind up vs sex activity

wind up is not a noun while sex activity is a noun.

Word	Noun	Adjective	Verb	Adverb
wind up	No	No	Yes	No
sex activity	Yes	No	No	No

wind up (noun)	sex activity (noun)
	activities associated with sexual intercourse

wind up (verb)	sex activity (verb)
finally be or do something
coil the spring of (some mechanical device) by turning a stem
to evoke sexual feelings
give a preliminary swing to the arm pitching