dark red vs burgundy

dark red and burgundy both are nouns.

Word	Noun	Adjective	Verb	Adverb
dark red	Yes	No	No	No
burgundy	Yes	No	No	No

As nouns, burgundy is a hyponym of dark red; that is, burgundy is a word with a more specific, narrower meaning than dark red:

Other hyponyms of dark red include claret, oxblood red, wine-colored, wine-coloured, wine.

dark red (noun)	burgundy (noun)
a red color that reflects little light	a dark purplish-red to blackish-red color