A low-pressure area is a weather phenomenon where the atmospheric pressure is lower than the surrounding areas. It is often associated with cloudy and rainy weather conditions. There are several synonyms for low-pressure area, including depression, cyclone, vortex, and trough. Depression refers to a region of low pressure with closed isobars, while cyclone is a circular low-pressure system with counter-clockwise rotation. Vortex is a type of cyclone that has a more violent and intense character. Finally, a trough is a region of low pressure that extends along a latitudinal band and often coincides with areas of precipitation and storminess.