What is the primary difference between anorexia nervosa and bulimia nervosa?

Clients who are anorexic are proud of their control over eating, and clients with bulimia are ashamed of their behavior.

Anorexia has a psychological basis, whereas the cause of bulimia is biologic.

There is no real difference between these two types of disorders.

Bulimia can be life threatening, whereas anorexia is seldom so.