Differentiate between product quality and process quality?

Product quality is focusing in meeting tolerances in the end result of manuafacturing activities. Process quality focuses on each activitivity and forces the each activity towards maximum tolerances towards irrespective of the end result. For example Can and Lid has to match. Lid Can paint and manufacture that Lid has to fit this is called product quality where as process quality is the ability to produce the Lid within the spec it has to fit in Can