flex vs hump

flex and hump both are nouns.

Word	Noun	Adjective	Verb	Adverb
flex	Yes	No	Yes	No
hump	Yes	No	Yes	No

flex (noun)	hump (noun)
the act of flexing	something that bulges out or is protuberant or projects from its surroundings

flex (verb)	hump (verb)
cause (an object) to assume a crooked or angular form	have sexual intercourse with
bend a joint	round one's back by bending forward and drawing the shoulders forward
form a curve
contract
exhibit the strength of