subscriber line vs connector

subscriber line and connector both are nouns.

Word	Noun	Adjective	Verb	Adverb
subscriber line	Yes	No	No	No
connector	Yes	No	No	No

As nouns, connector is a hypernym of subscriber line; that is, connector is a word with a broader meaning than subscriber line:

Other hypernyms of subscriber line include connecter, connection, connective, connexion.

subscriber line (noun)	connector (noun)
a telephone connection	an instrumentality that connects