refraction vs refract

refraction is a noun but refract is not a noun.

Word	Noun	Adjective	Verb	Adverb
refraction	Yes	No	No	No
refract	No	No	Yes	No

refraction (noun)	refract (noun)
the amount by which a propagating wave is bent
the change in direction of a propagating wave (light or sound) when passing from one medium to another

refraction (verb)	refract (verb)
	determine the refracting power of (a lens)
	subject to refraction