backbone vs connecter

backbone and connecter both are nouns.

Word	Noun	Adjective	Verb	Adverb
backbone	Yes	No	No	No
connecter	Yes	No	No	No

As nouns, connecter is a hypernym of backbone; that is, connecter is a word with a broader meaning than backbone:

Other hypernyms of backbone include connection, connective, connector, connexion.

backbone (noun)	connecter (noun)
the part of a network that connects other networks together	an instrumentality that connects
the part of a book's cover that encloses the inner side of the book's pages and that faces outward when the book is shelved
fortitude and determination
the series of vertebrae forming the axis of the skeleton and protecting the spinal cord
a central cohesive source of support and stability