ˈzaɪən
Originally a hill in Jerusalem, later a synonym for Jerusalem and the Land of Israel.
For the Lord hath chosen Zion; he hath desired it for his habitation.
Psalms 132:13, KJV
Shake thyself from the dust; arise, and sit down, O Jerusalem: loose thyself from the bands of thy neck, O captive daughter of Zion.
Isaiah 52:2, KJV
ציון /tziyyon/
Biblical Period, Jerusalem
Σιών /Sion/
Hellenistic Period, Jerusalem