depression: A mental health disorder characterized by persistently depressed mood or loss of interest in activities, causing significant impairment in daily life.
Possible causes include a combination of biological, psychological, and social sources of distress. Increasingly, research suggests these factors may cause changes in brain function, including altered activity of certain neural circuits in the brain.
economics: the branch of knowledge concerned with the production, consumption, and transfer of wealth. or
the condition of a region or group as regards material prosperity.