A frown is a simpler expression which most people instinctively know. It involves in the lips turning downward, and the furrowing of the brow. A grimace is usually characterized as an ugly, twisted expression...

The term industrialization generally refers to the process of shifting from hand production to machine production. The term urbanization refers to the process of people migrating from rural areas (such as...

Depression is an umbrella term for nine different types of depression that includes similar symptoms but are quite different from each other.

Depression is small bouts of sadness that arise from certain situations, while clinical depression is when patients suffer from sadness throughout the day.