black body vs full radiator

black body and full radiator both are nouns.

Word	Noun	Adjective	Verb	Adverb
black body	Yes	No	No	No
full radiator	Yes	No	No	No

As nouns, black body and full radiator are synonyms defined as:

black body and full radiator: a hypothetical object capable of absorbing all the electromagnetic radiation falling on it

Other synonyms of black body include blackbody.

black body (noun)	full radiator (noun)
a hypothetical object capable of absorbing all the electromagnetic radiation falling on it	a hypothetical object capable of absorbing all the electromagnetic radiation falling on it