For the purpose of this article, the word "bonds" shall mean ad valorem bonds, revenue
bonds, certificates of indebtedness, special assessment bonds and certificates, and
other evidences of indebtedness. The words "revenue bonds" shall mean bonds payable
solely from the revenues derived from sources of revenue other than ad valorem taxes
on real and personal property. The words "ad valorem bonds" means bonds and the interest
thereon which are payable from the proceeds of ad valorem taxes levied on real and
personal property situated in Duval County or any part thereof.