connexion vs connecter

connexion and connecter both are nouns.

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

As nouns, connexion and connecter are synonyms defined as:

Other synonyms of connexion include connection, connective, connector.

connexion (noun)	connecter (noun)
the act of bringing two things into contact (especially for communication)	an instrumentality that connects
shifting from one form of transportation to another
an instrumentality that connects
the process of bringing ideas or events together in memory or imagination
a relation between things or events (as in the case of one causing the other or sharing features with it)
a connecting shape