Is chaldeans and new babylonians the same?

Chaldeans and Neo-Babylonians are closely related but not exactly the same. The Chaldeans were a Semitic people who settled in southern Mesopotamia and gained prominence in the 1st millennium BCE. The Neo-Babylonian Empire, which emerged in the 7th century BCE, was largely associated with Chaldean leaders, particularly Nebuchadnezzar II, but it also included a diverse population. Thus, while the Chaldeans played a significant role in the Neo-Babylonian Empire, they represent a specific ethnic group within that broader historical context.