metritis vs rubor

metritis and rubor both are nouns.

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

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

metritis: inflammation of the lining of the uterus (of the endometrium)
rubor: a response of body tissues to injury or irritation; characterized by pain and swelling and redness and heat

Other hypernyms of metritis include inflammation, redness.

metritis (noun)	rubor (noun)
inflammation of the lining of the uterus (of the endometrium)	a response of body tissues to injury or irritation; characterized by pain and swelling and redness and heat