myositis trichinosa vs myositis

myositis trichinosa and myositis both are nouns.

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

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

myositis trichinosa: 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 myositis trichinosa include infestation.

myositis trichinosa (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