What is the main difference between major depressive disorder and bipolar disorder?

Bipolar disorder is easily confused with depression because it can include depressive episodes. The main difference between the two is that depression is unipolar, meaning that there is no “up” period, but bipolar disorder includes symptoms of mania

Explanation: Hey what are u trying to say

Explanation:

Major Depressive Disorder is called Depression in simple language. When a person is in a low mood for a constant period of two weeks, he is said to be depressed. People who are depressed usually loose interest in enjoyable situations, they have low energy levels, they experience low self esteem, etc. Whereas Bipolar disorder is the extreme case of Depression in which the person is at a very high stage of depression called mania. It is a mental disorder. It has periods of elevated moods. We can understand this concept easily by saying that bipolar disorder is the sever form of depression.

since you have not provided the options here i   am going to give you general overview about hormone.hormone are actually the part of endocrine system in our body and produced by the endocrine glands. the hormones act like a chemical messenger   within human body. once produce by the glands they   travel through the blood stream and reach at specific or target tissue and organs   which result in control of our body function. the hormones are specific in their work and work on only the targeted tissue or organ   . with the of hormone endocrine system regulate the heart rate , metabolism, our mood and   growth as well as the development and even the sleeping cycle etc. they actually are the messenger for body cell and organs .