For the purpose of this chapter, the following words shall be defined as herein provided unless the context requires otherwise:
"Local governmental unit" shall mean any county, any incorporated city, town or village, any school district, any utility district, any community college, any institution of higher learning, any municipal airport authority or regional airport authority in the state, any local tourism commission in the state or any public improvement district created under the Public Improvement District Act.
"Governing authority" shall mean the board of supervisors of any county, board of trustees of any school district or community college whether elective or appointive, the governing board of any city, town or village, the board of commissioners of a utility district, the Board of Trustees of State Institutions of Higher Learning, the commissioners of a municipal airport authority or regional airport authority, the commission of a local tourism commission or the board of directors of any public improvement district created under the Public Improvement District Act.