dielectric vs nonconductor

dielectric and nonconductor both are nouns.

Word	Noun	Adjective	Verb	Adverb
dielectric	Yes	No	No	No
nonconductor	Yes	No	No	No

As nouns, dielectric and nonconductor are synonyms defined as:

dielectric and nonconductor: a material such as glass or porcelain with negligible electrical or thermal conductivity

Other synonyms of dielectric include insulator.

dielectric (noun)	nonconductor (noun)
a material such as glass or porcelain with negligible electrical or thermal conductivity	a material such as glass or porcelain with negligible electrical or thermal conductivity