fulfill vs ply

fulfill is not a noun while ply is a noun.

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

As verbs, ply is a hypernym of fulfill; that is, ply is a word with a broader meaning than fulfill:

Other hypernyms of fulfill include cater, provide, supply.

fulfill (noun)	ply (noun)
	(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

fulfill (verb)	ply (verb)
fill, satisfy or meet a want or need or condition or restriction	give what is desired or needed, especially support, food or sustenance
put in effect	use diligently
meet the requirements or expectations of	wield vigorously
	join together as by twisting, weaving, or molding
	travel a route regularly
	apply oneself diligently