lymphangiogram vs angiogram

lymphangiogram and angiogram both are nouns.

Word	Noun	Adjective	Verb	Adverb
lymphangiogram	Yes	No	No	No
angiogram	Yes	No	No	No

As nouns, angiogram is a hypernym of lymphangiogram; that is, angiogram is a word with a broader meaning than lymphangiogram:

lymphangiogram: an angiogram of the lymph nodes and lymph vessels made after the injection of a radiopaque substance
angiogram: an X-ray representation of blood vessels made after the injection of a radiopaque substance

lymphangiogram (noun)	angiogram (noun)
an angiogram of the lymph nodes and lymph vessels made after the injection of a radiopaque substance	an X-ray representation of blood vessels made after the injection of a radiopaque substance