Constantine(male given name) proper noun [UK: ˈkɑːn.stən.ˌtin] [US: ˈkɑːn.stən.ˌtin]
Constantinopla proper noun
Constantinople(Name of present-day Istanbul from 330-1930 C.E.. Previously known as Byzantium) proper noun [UK: ˌkɑːn.stæn.təˈno.pəl] [US: ˌkɑːn.stæn.təˈno.pəl]