burnt umber vs coffee

burnt umber and coffee both are nouns.

Word	Noun	Adjective	Verb	Adverb
burnt umber	Yes	No	No	No
coffee	Yes	No	No	No

As nouns, burnt umber and coffee are synonyms defined as:

Other synonyms of burnt umber include chocolate, deep brown, umber.

burnt umber (noun)	coffee (noun)
a medium brown to dark-brown color	a medium brown to dark-brown color
dark brown pigment obtained by heating umber	a beverage consisting of an infusion of ground coffee beans
	a seed of the coffee tree; ground to make coffee
	any of several small trees and shrubs native to the tropical Old World yielding coffee beans