nylon vs polyamide

nylon and polyamide both are nouns.

Word	Noun	Adjective	Verb	Adverb
nylon	Yes	No	No	No
polyamide	Yes	No	No	No

As nouns, polyamide is a hypernym of nylon; that is, polyamide is a word with a broader meaning than nylon:

nylon: a thermoplastic polyamide; a family of strong resilient synthetic fibers
polyamide: a polymer containing repeated amide groups

Other hypernyms of nylon include man-made fiber, synthetic fiber, polymeric amide.

nylon (noun)	polyamide (noun)
a group of synthetic fabrics, known generically as aliphatic polyamides	a polymer containing repeated amide groups
a thermoplastic polyamide; a family of strong resilient synthetic fibers