Distinguish between depression and bipolar disorder. How are they similar? How are they different?

What will be an ideal response?

* Depression is a mood disorder characterized by sadness, feelings of guilt, changes in sleep, appetite and motor behavior, and sometimes thoughts of suicide.
* Bipolar disorder is a mood disorder in which the individual experiences episodes of mania and depression, which usually alternate.
* Depression and bipolar disorder are similar in that they are both mood disorders; depression is an aspect of bipolar disorder: they often occur with other disorders, drug treatment has been effective with both, and their underlying causes may have some overlap.
* They are different in that bipolar is an alternation between depression and mania, whereas depression is a constant state.
* There is no sex difference in bipolar disorder in terms of prevalence; bipolar disorder is less prevalent and responds to drug treatments.