flex vs convolute

flex is a noun but convolute is not a noun.

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

As verbs, convolute is a hyponym of flex; that is, convolute is a word with a more specific, narrower meaning than flex:

Other hyponyms of flex include dent, indent, incurvate, gnarl, crank, convolve.

flex (noun)	convolute (noun)
the act of flexing

flex (adjective)	convolute (adjective)
	rolled longitudinally upon itself

flex (verb)	convolute (verb)
cause (an object) to assume a crooked or angular form	practice sophistry; change the meaning of or be vague about in order to mislead or deceive
bend a joint	curl, wind, or twist together
form a curve
contract
exhibit the strength of