telegraph wire vs wire

telegraph wire and wire both are nouns.

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

As nouns, wire is a hypernym of telegraph wire; that is, wire is a word with a broader meaning than telegraph wire:

Other hypernyms of telegraph wire include conducting wire.

telegraph wire (noun)	wire (noun)
the wire that carries telegraph and telephone signals	ligament made of metal and used to fasten things or make cages or fences etc
	a metal conductor that carries electricity over a distance
	a message transmitted by telegraph
	the finishing line on a racetrack

telegraph wire (verb)	wire (verb)
	equip for use with electricity
	send cables, wires, or telegrams
	fasten with wire
	string on a wire
	provide with electrical circuits