'Class' and 'object' are sometimes used interchangeably. A way to keep
them distinct is to use 'object' to mean an instance of a class. E.g.
Worksheet is a class, and Sheet1 is an object. A property is a
property of an object, e.g. Cells is a property of Sheet1, Value is a
property of each Cell. A method is a procedure for adding, changing,
or deleting properties to an object, or adding or deleting an instance
object of a class. Each class has a prescribed set of properties and
methods that are used to define or alter an object in that class.

Hth,
Merjet