shears vs shear

shears and shear both are nouns.

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

shears (noun)	shear (noun)
large scissors with strong blades	a large edge tool that cuts sheet metal by passing a blade through it
	(physics) a deformation of an object in which parallel planes remain parallel but are shifted in a direction parallel to themselves

shears (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