felicity [felicities](apt and pleasing style in speech, writing, etc.) noun [UK: fə.ˈlɪ.sɪ.ti] [US: fə.ˈlɪ.sə.ti]
happiness(emotion of being happy) noun [UK: ˈhæp.i.nəs] [US: ˈhæp.i.nəs]What is happiness? = Cos'è la felicità?
joy [joys](feeling of happiness) noun [UK: dʒɔɪ] [US: ˌdʒɔɪ]It is a joy to be able to work listening to Chopin. = È una felicità poter lavorare ascoltando Chopin.