Difference between Class Module and Standard Module?

Standard module:

-This place for variable declarations,procedures etc.& it can accessed these procedures in wherever in the project.

-Available only for the defining modules where they are used.

Class module:

-We can use of it whenever an object reference of the particular class is defined for number of applications

-Unlike standard module,members of class like object's properties,events can be accessed only whenever an instance of class is created.