'Monument' in the Bible

Then David struck down Hadadezer the son of Rehob, king of Zobah, when he went to restore his monument at the Euphrates River.

(Now Absalom had taken and set up for himself in his lifetime a stone pillar that [is] in the valley of the king, because he said, "I have no son in order to remember my name," and he called the stone pillar by his name. It [is] called the monument of Absalom until this day).