deep red vs crimson

deep red and crimson both are nouns.

Word	Noun	Adjective	Verb	Adverb
deep red	Yes	No	No	No
crimson	Yes	Yes	Yes	No

As nouns, deep red and crimson are synonyms defined as:

Other synonyms of deep red include ruby.

deep red (noun)	crimson (noun)
a deep and vivid red color	a deep and vivid red color

deep red (adjective)	crimson (adjective)
	characterized by violence or bloodshed
	of a color at the end of the color spectrum (next to orange); resembling the color of blood or cherries or tomatoes or rubies
	(especially of the face) reddened or suffused with or as if with blood from emotion or exertion

deep red (verb)	crimson (verb)
	turn red, as if in embarrassment or shame