oxford grey vs charcoal

oxford grey and charcoal both are nouns.

Word	Noun	Adjective	Verb	Adverb
oxford grey	Yes	No	No	No
charcoal	Yes	Yes	Yes	No

As nouns, oxford grey and charcoal are synonyms defined as:

Other synonyms of oxford grey include charcoal gray, charcoal grey, oxford gray.

oxford grey (noun)	charcoal (noun)
a very dark grey color	a stick of black carbon material used for drawing
	a drawing made with a stick of black carbon material
	a very dark grey color
	a carbonaceous material obtained by heating wood or other organic matter in the absence of air

oxford grey (adjective)	charcoal (adjective)
	of a very dark grey

oxford grey (verb)	charcoal (verb)
	draw, trace, or represent with charcoal