Answer:
Corporation for Public Broadcasting ⇒ Government Corporation.
Government corporations are organizations that the government of a nation creates to engage in commercial activities. These corporations will be funded by the government but will have the independence of a private institution. The Corporation for Public Broadcasting is set up like this which makes it a government corporation.
Department of Justice ⇒ Government agency
A government agency is one that was created to have oversight and control over certain functions of the government. The DOJ is responsible for enforcing the law in the United States which makes it an agency.
Grumman Corporation ⇒ Government contractor
A government contractor is one that is hired by the government to carry out some work. They are private corporations that are simply on contract with the government. Grumman Corporation was one such company.