vulvovaginitis vs redness

vulvovaginitis and redness both are nouns.

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

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

vulvovaginitis: inflammation of the vulva and the vagina
redness: a response of body tissues to injury or irritation; characterized by pain and swelling and redness and heat

Other hypernyms of vulvovaginitis include inflammation, rubor.

vulvovaginitis (noun)	redness (noun)
inflammation of the vulva and the vagina	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