fibrositis vs inflammation

fibrositis and inflammation both are nouns.

Word	Noun	Adjective	Verb	Adverb
fibrositis	Yes	No	No	No
inflammation	Yes	No	No	No

As nouns, inflammation is a hypernym of fibrositis; that is, inflammation is a word with a broader meaning than fibrositis:

fibrositis: inflammation of white fibrous tissues (especially muscle sheaths)
inflammation: a response of body tissues to injury or irritation; characterized by pain and swelling and redness and heat

Other hypernyms of fibrositis include redness, rubor.

fibrositis (noun)	inflammation (noun)
inflammation of white fibrous tissues (especially muscle sheaths)	arousal to violent emotion
	the act of setting something on fire
	a response of body tissues to injury or irritation; characterized by pain and swelling and redness and heat
	the state of being emotionally aroused and worked up