myositis vs inflammation

myositis and inflammation both are nouns.

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

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

myositis: inflammation of muscle tissue
inflammation: a response of body tissues to injury or irritation; characterized by pain and swelling and redness and heat

Other hypernyms of myositis include redness, rubor.

myositis (noun)	inflammation (noun)
inflammation of muscle tissue	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