keratoscleritis vs redness

keratoscleritis and redness both are nouns.

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

As nouns, redness is a hypernym of keratoscleritis; that is, redness is a word with a broader meaning than keratoscleritis:

keratoscleritis: inflammation of the cornea and sclera of the eye
redness: a response of body tissues to injury or irritation; characterized by pain and swelling and redness and heat

Other hypernyms of keratoscleritis include inflammation, rubor.

keratoscleritis (noun)	redness (noun)
inflammation of the cornea and sclera of the eye	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