shearer vs shear

shearer and shear both are nouns.

Word	Noun	Adjective	Verb	Adverb
shearer	Yes	No	No	No
shear	Yes	No	Yes	No

shearer (noun)	shear (noun)
a skilled worker who shears the wool off of sheep or other animals	a large edge tool that cuts sheet metal by passing a blade through it
a workman who uses shears to cut leather or metal or textiles	(physics) a deformation of an object in which parallel planes remain parallel but are shifted in a direction parallel to themselves

shearer (verb)	shear (verb)
	become deformed by forces tending to produce a shearing strain
	cut with shears
	cut or cut through with shears
	shear the wool from