dent vs flex

dent and flex both are nouns.

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

As verbs, flex is a hypernym of dent; that is, flex is a word with a broader meaning than dent:

Other hypernyms of dent include bend, deform, turn, twist.

dent (noun)	flex (noun)
an impression in a surface (as made by a blow)	the act of flexing
an appreciable consequence (especially a lessening)
a depression scratched or carved into a surface

dent (verb)	flex (verb)
make a depression into	cause (an object) to assume a crooked or angular form
	bend a joint
	form a curve
	contract
	exhibit the strength of