| A | B |
| simple variable | one that is unrelated to any other variable in memory |
| array | a group of variables that have the same name and data type and are related in some way |
| one-dimensional array | a single column or row of variables |
| two-dimensional array | a table; made up of rows and columns |
| elements | the variables in the array |
| subscript | unique number that identifies each element in an array |