trichinosis vs myositis

trichinosis and myositis both are nouns.

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

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

trichinosis: infestation by trichina larvae that are transmitted by eating inadequately cooked meat (especially pork); larvae migrate from the intestinal tract to the muscles where they become encysted
myositis: inflammation of muscle tissue

Other hypernyms of trichinosis include infestation.

trichinosis (noun)	myositis (noun)
infestation by trichina larvae that are transmitted by eating inadequately cooked meat (especially pork); larvae migrate from the intestinal tract to the muscles where they become encysted	inflammation of muscle tissue