cholecystitis vs rubor

cholecystitis and rubor both are nouns.

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

As nouns, rubor is a hypernym of cholecystitis; that is, rubor is a word with a broader meaning than cholecystitis:

cholecystitis: inflammation of the gall bladder
rubor: a response of body tissues to injury or irritation; characterized by pain and swelling and redness and heat

Other hypernyms of cholecystitis include inflammation, redness.

cholecystitis (noun)	rubor (noun)
inflammation of the gall bladder	a response of body tissues to injury or irritation; characterized by pain and swelling and redness and heat