(a) In this subtitle the following words have the meanings indicated.
(b) “Contract” means an agreement, commitment, or arrangement made between the Commission and a governmental unit to further the purposes stated in § 15-302 of this subtitle.
(c) “Governmental unit” means:
(1) the National Capital Planning Commission;
(2) the United States government;
(3) the District of Columbia;
(4) the State, including the Washington Suburban Sanitary Commission;
(5) Virginia;
(6) Montgomery County or Prince George’s County;
(7) any municipal corporation, local subdivision, or corporation within the State, Virginia, Montgomery County, or Prince George’s County; or
(8) any other governmental agency the Commission determines to be appropriate to further the purposes stated in § 15-302 of this subtitle.