Depression (mood) , a common term for a sad or low mood or the loss of pleasure; an emotion that does not affect capacity to perform personal and vocational obligations
Clinical Depression , or major depressive disorder, a state of intense sadness, melancholia or despair that has advanced to the point of being disruptive to an individual's social functioning and/or activities of daily living
Depression (economics) , a longer-lasting and more severe economic downturn than a recession
--- The Great Depression , a severe economic recession in the 1930s
Depression (meteorology) , an area of low atmospheric pressure associated with cyclones and weather fronts
Depression (physiology) , a lowering, in particular a reduction in a particular biological variable or the function of an organ, contrasted to ''elevation''
