Middle-America

Central America- an isthmus joining the continents of North and South America, extending from the S border of Mexico to the NW border of Colombia and consisting of Belize, Guatemala, Honduras, El Salvador, Nicaragua, Costa Rica, and Panama (dictonary definition)

Central America-joining of North and South America countrys (paraphrased definition)

Middle America- continental North America S of the U.S., comprising [|mexico], Central America, and usually the West Indies (dictonary definition)

Middle America- Mexico and the West Indies. (paraphrased defintion)