cardiography vs electrocardiography

cardiography and electrocardiography both are nouns.

Word	Noun	Adjective	Verb	Adverb
cardiography	Yes	No	No	No
electrocardiography	Yes	No	No	No

As nouns, cardiography and electrocardiography are synonyms defined as:

cardiography and electrocardiography: diagnostic procedure consisting of recording the activity of the heart electronically with a cardiograph (and producing a cardiogram)

cardiography (noun)	electrocardiography (noun)
diagnostic procedure consisting of recording the activity of the heart electronically with a cardiograph (and producing a cardiogram)	diagnostic procedure consisting of recording the activity of the heart electronically with a cardiograph (and producing a cardiogram)