red chalk vs sanguine

red chalk and sanguine both are nouns.

Word	Noun	Adjective	Verb	Adverb
red chalk	Yes	No	No	No
sanguine	Yes	Yes	No	No

As nouns, red chalk and sanguine are synonyms defined as:

red chalk and sanguine: chalk of a reddish-brown colour that resembles dried blood

red chalk (noun)	sanguine (noun)
chalk of a reddish-brown colour that resembles dried blood	chalk of a reddish-brown colour that resembles dried blood
	a blood-red color

red chalk (adjective)	sanguine (adjective)
	inclined to a healthy reddish color often associated with outdoor life
	confidently optimistic and cheerful