What can you do to tell the difference between bipolar and borderline personality disorder?

Bipolar/Borderline: Bipolar is mood disorder. Borderline is a personality do. The two can coexist in the same individual.

Borderline: Intense fear of abandonment, being manipulative, impulsivity, a tendency to think of people and things in all good or all bad terms, self mutilating behaviors, drug and alcohol abuse, sexual impulsivity, a profoundly disturb sense of self, and extreme emotional volatility. Bipolar disorder is characterized by extreme mood swings from deep depression to the stratosphere of mania.