'Divisions' in the Bible

Now these are the people of the divisions of the kingdom, among those who had been made prisoners by Nebuchadnezzar, king of Babylon, and taken away to Babylon, who went back to Jerusalem and Judah, everyone to his town;

And they put the priests in their divisions and the Levites in their order, for the worship of God at Jerusalem; as it is recorded in the book of Moses.