plier vs ply

plier and ply both are nouns.

Word	Noun	Adjective	Verb	Adverb
plier	Yes	No	No	No
ply	Yes	No	Yes	No

plier (noun)	ply (noun)
someone who plies a trade	(usually in combinations) one of several layers of cloth or paper or wood as in plywood
	one of the strands twisted together to make yarn or rope or thread; often used in combination

plier (verb)	ply (verb)
	give what is desired or needed, especially support, food or sustenance
	use diligently
	wield vigorously
	join together as by twisting, weaving, or molding
	travel a route regularly
	apply oneself diligently