brick red vs mahogany

brick red and mahogany both are nouns.

Word	Noun	Adjective	Verb	Adverb
brick red	Yes	No	No	No
mahogany	Yes	No	No	No

As nouns, mahogany is a hypernym of brick red; that is, mahogany is a word with a broader meaning than brick red:

Other hypernyms of brick red include burnt sienna, reddish brown, sepia, Venetian red.

brick red (noun)	mahogany (noun)
a bright reddish-brown color	a shade of brown with a tinge of red
	any of various tropical timber trees of the family Meliaceae especially the genus Swietinia valued for their hard yellowish- to reddish-brown wood that is readily worked and takes a high polish
	wood of any of various mahogany trees; much used for cabinetwork and furniture