This document defines and provides pictures for the following terms: 1) Population Density - The number of people who live in 1 square mile or 1 square kilometer of land. Pictures of population density maps in the US are provided. 2) Plateau - An area of high, flat land with steep sides. A colorful picture of a plateau is included. 3) Rural - Of or like the country. An interesting picture of a rural area is used. 4) Naval - Of or having to do with the Navy. A picture depicting a naval engagement is given. 5) Suffrage - The right to vote. A picture with the word suffrage is selected to represent this term. 6)