man-made fiber vs nylon

man-made fiber and nylon both are nouns.

Word	Noun	Adjective	Verb	Adverb
man-made fiber	Yes	No	No	No
nylon	Yes	No	No	No

As nouns, nylon is a hyponym of man-made fiber; that is, nylon is a word with a more specific, narrower meaning than man-made fiber:

man-made fiber: fiber created from natural materials or by chemical processes
nylon: a thermoplastic polyamide; a family of strong resilient synthetic fibers

Other hyponyms of man-made fiber include acrylic, acrylic fiber.

man-made fiber (noun)	nylon (noun)
fiber created from natural materials or by chemical processes	a group of synthetic fabrics, known generically as aliphatic polyamides
	a thermoplastic polyamide; a family of strong resilient synthetic fibers