Dacron vs polyester

Dacron and polyester both are nouns.

Word	Noun	Adjective	Verb	Adverb
Dacron	Yes	No	No	No
polyester	Yes	No	No	No

As nouns, polyester is a hypernym of Dacron; that is, polyester is a word with a broader meaning than Dacron:

Dacron (noun)	polyester (noun)
a kind of polyester fabric	any of a large class of synthetic fabrics
	any of numerous synthetic resins; they are light and strong and weather resistant
	a complex ester used for making fibers or resins or plastics or as a plasticizer