cable vs ground cable

cable and ground cable both are nouns.

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

As nouns, ground cable is a hyponym of cable; that is, ground cable is a word with a more specific, narrower meaning than cable:

cable (noun)	ground cable (noun)
a very strong thick rope made of twisted hemp or steel wire	a mooring cable; runs from a buoy to a mooring anchor
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)	ground cable (verb)
send cables, wires, or telegrams
fasten with a cable