cable vs telegraph

cable and telegraph both are nouns.

Word	Noun	Adjective	Verb	Adverb
cable	Yes	No	Yes	No
telegraph	Yes	No	Yes	No

As verbs, cable and telegraph are synonyms defined as:

Other synonyms of cable include wire.

cable (noun)	telegraph (noun)
a very strong thick rope made of twisted hemp or steel wire	apparatus used to communicate at a distance over a wire (usually in Morse code)
a television system that transmits over cables
a conductor for transmitting electrical or optical signals or electric power
a telegram sent abroad
television that is transmitted over cable directly to the receiver
a nautical unit of depth

cable (verb)	telegraph (verb)
send cables, wires, or telegrams	send cables, wires, or telegrams
fasten with a cable