skiagram vs radiogram

skiagram and radiogram both are nouns.

Word	Noun	Adjective	Verb	Adverb
skiagram	Yes	No	No	No
radiogram	Yes	No	No	No

As nouns, skiagram and radiogram are synonyms defined as:

skiagram and radiogram: a photographic image produced on a radiosensitive surface by radiation other than visible light (especially by X-rays or gamma rays)

Other synonyms of skiagram include radiograph, shadowgraph, skiagraph.

skiagram (noun)	radiogram (noun)
a photographic image produced on a radiosensitive surface by radiation other than visible light (especially by X-rays or gamma rays)	a photographic image produced on a radiosensitive surface by radiation other than visible light (especially by X-rays or gamma rays)
	a message transmitted by wireless telegraphy