| A | B |
| expression | a combination of operators and values that evaluates to a single value |
| assignment operator | allows a program to change the value represented by a variable |
| variable | a named reference to a value that can be used repeatedly throughout a program. |
| string | an ordered sequence of characters. |
| boolean value | a data type that is either true or false. |
| comparison operators | <, >, <=, >=, ==, != indicate a Boolean expression |
| logical operator | NOT, AND, and OR, which evaluate to a Boolean value. |
| conditional statement | affects the sequential flow of control by executing different statements based on the value of a Boolean expression. |
| function | a named group of programming instructions. Also referred to as a ÒprocedureÓ. |
| function call | a command that executes the code within a function |