data link vs electric circuit

data link and electric circuit both are nouns.

Word	Noun	Adjective	Verb	Adverb
data link	Yes	No	No	No
electric circuit	Yes	No	No	No

As nouns, electric circuit is a hypernym of data link; that is, electric circuit is a word with a broader meaning than data link:

data link: an interconnecting circuit between two or more locations for the purpose of transmitting and receiving data
electric circuit: an electrical device that provides a path for electrical current to flow

Other hypernyms of data link include circuit, electrical circuit.

data link (noun)	electric circuit (noun)
an interconnecting circuit between two or more locations for the purpose of transmitting and receiving data	an electrical device that provides a path for electrical current to flow