Whats the diffrence between bipolar and borderline personality disorder?

Very different : Two separate and independent conditions. Bipolar is a mood disorder and fluctuates with time and treatment. Borderline pd is a more permanent and constant condition.

Bipolar: Bipolar is manic depression. Borderline is personality disorder. Both can have mood shifts, depression phases, rage episodes & self-harm, but borderlline features are more pervasive, persistent, rapid cycling and resistant.

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.