trichiniasis vs myositis

trichiniasis and myositis both are nouns.

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

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

trichiniasis: 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 trichiniasis include infestation.

trichiniasis (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