Names are used to access the object fields. An unambiguous name shall be used.
Simple name could be used for the field, within class. For instance, a statement could be added in Rectangle class, which will be priting the height & width.
In this case simple names are height & width.
System.out.println("Width and height are: " + width + ", " + height);
Code that is being present out of the objectís class may utilize