Olivet is another name for the Mount of Olives, the ridge east of Jerusalem. The name is associated with the mountain’s olive gardens and appears as a place-name in the biblical record.
Olivet is connected with David’s flight and with the New Testament events associated with the Mount of Olives, including the ministry and ascension of Jesus.
The name comes through the form used for an oliveyard. The supplied material identifies Olivet with the Mount of Olives rather than with a separate mountain.