solar furnace vs reflector

solar furnace and reflector both are nouns.

Word	Noun	Adjective	Verb	Adverb
solar furnace	Yes	No	No	No
reflector	Yes	No	No	No

As nouns, reflector is a hypernym of solar furnace; that is, reflector is a word with a broader meaning than solar furnace:

solar furnace: a concave mirror that concentrates the rays of the sun; can produce high temperatures
reflector: device that reflects radiation

solar furnace (noun)	reflector (noun)
a concave mirror that concentrates the rays of the sun; can produce high temperatures	device that reflects radiation
	optical telescope consisting of a large concave mirror that produces an image that is magnified by the eyepiece