skiagraphy vs radiography

skiagraphy and radiography both are nouns.

Word	Noun	Adjective	Verb	Adverb
skiagraphy	Yes	No	No	No
radiography	Yes	No	No	No

As nouns, skiagraphy and radiography are synonyms defined as:

skiagraphy and radiography: the process of making a radiograph; producing an image on a radiosensitive surface by radiation other than visible light

skiagraphy (noun)	radiography (noun)
the process of making a radiograph; producing an image on a radiosensitive surface by radiation other than visible light	photography that uses other kinds of radiation than visible light
	the process of making a radiograph; producing an image on a radiosensitive surface by radiation other than visible light