upending vs sex

upending and sex both are nouns.

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

upending (noun)	sex (noun)
turning upside down; setting on end	activities associated with sexual intercourse
	the properties that distinguish organisms on the basis of their reproductive roles
	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

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