arteriography vs arthrography

arteriography and arthrography both are nouns.

Word	Noun	Adjective	Verb	Adverb
arteriography	Yes	No	No	No
arthrography	Yes	No	No	No

As nouns, arthrography is a hypernym of arteriography; that is, arthrography is a word with a broader meaning than arteriography:

arteriography: roentgenographic examination of arteries
arthrography: roentgenographic examination of a joint after injection of radiopaque contrast medium; produces an arthrogram

arteriography (noun)	arthrography (noun)
roentgenographic examination of arteries	roentgenographic examination of a joint after injection of radiopaque contrast medium; produces an arthrogram