rubor vs redness

rubor and redness both are nouns.

Word	Noun	Adjective	Verb	Adverb
rubor	Yes	No	No	No
redness	Yes	No	No	No

As nouns, rubor and redness are synonyms defined as:

rubor and redness: a response of body tissues to injury or irritation; characterized by pain and swelling and redness and heat

Other synonyms of rubor include inflammation.

rubor (noun)	redness (noun)
a response of body tissues to injury or irritation; characterized by pain and swelling and redness and heat	red color or pigment; the chromatic color resembling the hue of blood
	a response of body tissues to injury or irritation; characterized by pain and swelling and redness and heat