Ezra 1:7

Cyrus : the Persian king of Babylon known as Cyrus the Great (OS)

Jerusalem : the capital city of Israel,a town; the capital of Israel near the southern border of Benjamin
(31° 46´, 35° 14´); (31° 46´, 35° 14´); (31° 46´, 35° 14´); (31° 46´, 35° 14´); (31° 46´, 35° 14´); (31° 46´, 35° 14´)

Nebuchadnezzar : the king of Babylon who took Judah into exile

Ezra 6:1

Babylon : a country of Babylon in lower Mesopotamia
(32° 32´, 44° 25´); (32° 32´, 44° 25´); (32° 32´, 44° 25´); (30° 57´, 46° 6´)

Babylonia : a region in lower Mesopotamia where the Chaldaeans lived
(32° 32´, 44° 25´); (32° 32´, 44° 25´); (32° 32´, 44° 25´); (30° 57´, 46° 6´)

Darius : king of Persia after Cyrus and Artaxerxes Smerdis; Darius I,son of Ahasuerus; Darius II the Mede,king of Persia after Darius II; Darius III the Persian