radiographic vs radiography

radiographic is not a noun while radiography is a noun.

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

radiographic (noun)	radiography (noun)
	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

radiographic (adjective)	radiography (adjective)
relating to or produced by radiography