carditis vs pancarditis

carditis and pancarditis both are nouns.

Word	Noun	Adjective	Verb	Adverb
carditis	Yes	No	No	No
pancarditis	Yes	No	No	No

As nouns, pancarditis is a hyponym of carditis; that is, pancarditis is a word with a more specific, narrower meaning than carditis:

carditis: inflammation of the heart
pancarditis: inflammation of the entire heart (the epicardium and the myocardium and the endocardium)

Other hyponyms of carditis include endocarditis, myocardial inflammation, myocarditis, pericarditis.

carditis (noun)	pancarditis (noun)
inflammation of the heart	inflammation of the entire heart (the epicardium and the myocardium and the endocardium)