Difference between Class Module and Standard Module?

standard module:

1)place for variable declarations,procedures etc.and we can access these procedures in wherever in the project.

2)Available only for the existing modules where they are used.

class module:

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

2)We can make use of it whenever an object reference of the particular class is created for number of applications