A named storage area for values that can vary.
You can updated the value(s) within a variable at any time.
An item that cannot be changed is referred to as a constant.
White space refers to the use of spacing within your code or writing so that the text on a page can be read more easily.
For example, when wanting to give the impression that you have created a table.
First name Surname Jane Doe John Doe
However, other programming languages are heavily reliant on spacing in order for them to understand the code. Formatting to make things easier for you to read in this case could mean that your program won’t behave as your expect.