(1) "Act" means this subchapter.

(2) "Bonds" means any bonds, issued pursuant to the Arkansas Constitution and pursuant to an act of the General Assembly heretofore or hereafter enacted, and means all debentures, notes, warrants, tax anticipation notes, bond anticipation notes, commercial paper, or other evidence of indebtedness or leases, installment purchase contracts, or other agreements or certificates of participation therein issued by or on behalf of a governmental unit, secured by revenues from any special fund or source or assessments for local improvements and taxes;

(3) "Foreign currency" means currency, euros, or money other than the legal tender of the United States;

(4) "Governmental unit" means the State of Arkansas, any department, board, commission, or other agency or instrumentality of the state, or any county, municipality, school district, regional water distribution district, improvement district, public trust, or other political subdivision of the state, heretofore or hereafter created, or any board, commission, authority, or other public agency or instrumentality of a governmental unit which is now or hereafter authorized by law to issue bonds. Nothing herein shall be deemed to give any department, board, commission, or other agency of the state any additional authority to issue bonds or take any action independently and without acting by or through the State Board of Finance if the participation of the State Board of Finance is otherwise required by the law under authority of which the bonds are issued;

(5) "State" means the State of Arkansas; and

(6) "Taxable bonds" means bonds the interest on which is not, in any manner, exempt from federal income taxation or excludable from gross income for federal income tax purposes.