Sec. 2. As used in this act: 

(a)      "Interlocal agreement" means an agreement entered into under this act.
(b)     "Local governmental unit" means a county, city, village, township, or charter township.
(c)      "Province" means a province of the Dominion of Canada.
(d)     "Property" means any real or personal property, as described in section 34c of the general property tax act, Act No. 206 of the Public Acts of 1893, being section 211.34c of the Michigan Compiled Laws.
(e)      "Public agency" means a political subdivision of this state or of another state of the United States or of the Dominion of Canada, including, but not limited to, state government; a county, city, village, township, charter township, school district, single or multipurpose special district, or single or multipurpose public authority; provincial government, metropolitan government, borough, or other political subdivision of the Dominion of Canada; an agency of the United States government; or a similar entity of any other states of the United States and of the Dominion of Canada.
(f)      "State" means a state of the United States.

Sec. 4. A public agency of this state may exercise jointly with any other public agency of the state or with a public agency of any other state of the United States or with a public agency of the Dominion of Canada or with any public agency of the United States government, any power, privilege or authority which such agencies share in common and which each might exercise separately.