What is the difference between Expressions and Operators?

Question :

What is the difference between Expressions and Operators?

Most statements (logical lines) that you write will contain expressions. A simple example of an expression is 2+3. An expression is a combination of operators and operands.
Operators are functionality that do something and can be represented by symbols, such as + or by special keywords. They require some data to operate on and such data is called operands.