Explainer: Who Will Serve in President-Elect Joe Biden's Cabinet?
In the United States government, the Cabinet is the president’s advisory body that includes the Vice President and the heads of all 15 executive departments. These heads take the title of Secretary, except for the head of the Justice Department, who assumes the title of Attorney General. The Cabinet also includes the White House Chief of Staff and the heads of other government agencies, including the Environmental Protection Agency, Central Intelligence Agency, and others.
Source: nrb.org