Physical: to do with the body and the senses
Psychological: to do with the mind and the emotions
Social: to do with relationships and status
Ideological: to do with tastes and values
This framework is known as the Four Pleasures and the best user experiences are pleasurable in all four of these aspects.
In order to deliver great user experiences we need a holistic understanding of users and a knowledge of how to enable enjoyable and meaningful experiences through UX design.