Can you clarify what bipolar depression is?

Mania and depression: Bipolar disorder involves cycles of reduced need for sleep and feeling high without drugs (i.e. "mania") with experiencing clinical depression including possible hopelessness, and lack of motivation. People with bipolar can be treated with both medication and psychotherapy.

Depression: Bipolar Depression occurs as a phase of bipolar Disorder. When depressed 1 may have low mood, v energy level, v concentration, amotivation, ^ or v sleeping, ^ or v in appetite, poor self esteem, feelings of hopelessness or helplessness, lack of joy, irritability, impaired functioning, guilt & suicidal thoughts or psychosis.**Bipolar Disorder is a mood disorder that can present w possible symptoms