wireless telegraph vs radiotelegraph

wireless telegraph and radiotelegraph both are nouns.

Word	Noun	Adjective	Verb	Adverb
wireless telegraph	Yes	No	No	No
radiotelegraph	Yes	No	No	No

As nouns, wireless telegraph and radiotelegraph are synonyms defined as:

wireless telegraph and radiotelegraph: the use of radio to send telegraphic messages (usually by Morse code)

Other synonyms of wireless telegraph include radiotelegraphy, wireless telegraphy.

wireless telegraph (noun)	radiotelegraph (noun)
the use of radio to send telegraphic messages (usually by Morse code)	the use of radio to send telegraphic messages (usually by Morse code)
	telegraphy that uses transmission by radio rather than by wire