writhe vs wrestle

writhe is not a noun while wrestle is a noun.

Word	Noun	Adjective	Verb	Adverb
writhe	No	No	Yes	No
wrestle	Yes	No	Yes	No

As verbs, writhe and wrestle are synonyms defined as:

writhe and wrestle: to move in a twisting or contorted motion, (especially when struggling)

Other synonyms of writhe include squirm, twist, worm, wriggle.

writhe (noun)	wrestle (noun)
	the act of engaging in close hand-to-hand combat

writhe (verb)	wrestle (verb)
to move in a twisting or contorted motion, (especially when struggling)	engage in deep thought, consideration, or debate
	combat to overcome an opposing tendency or force
	engage in a wrestling match
	to move in a twisting or contorted motion, (especially when struggling)