coincidence [coincidences](state of events appearing to be connected when they are not) noun [UK: kəʊ.ˈɪn.sɪ.dəns] [US: koʊ.ˈɪn.sɪ.dəns]What a coincidence! = Che coincidenza!
connection [connections](transport: transfer) noun [UK: kə.ˈnek.ʃn̩] [US: kə.ˈnek.ʃn̩]If this train is delayed, we shall miss our connection at Kobe. = Se questo treno è in ritardo, perderemo la nostra coincidenza a Kobe.