As used in this chapter, the term:

(1) "Political subdivision" means the state or any local subdivision of the state or public instrumentality or public corporate body created by or under authority of state law, including, but not limited to, municipalities, counties, school districts, special taxing districts, conservation districts, authorities, and any other state or local public instrumentality or corporation which has the right to bring and defend actions or to issue its bonds or other obligations as evidence of indebtedness under any provision of law and also means any corporate or other entity which leases a public improvement to such political subdivision; and the term also means the governing body of such political subdivision and its members and officers in their official capacity.

(2) "Public lawsuit" means any action whereby the validity, reasonability, soundness, location, wisdom, feasibility, extent, or character of construction, improvement, financing, or leasing of any public improvement, project, or facility by any political subdivision, as owner or as lessee, is questioned directly or indirectly, including, but not limited to, actions for declaratory judgments or injunctions or interventions to declare invalid or to enjoin or to prevent such construction, improvement, financing, or leasing as lessor or as lessee and means any action to prevent or declare invalid or enjoin the creation, organization, or formation of any such political subdivision. This definition as used in this chapter shall not be construed to broaden any right of action as is validly limited by applicable law.