Concave is used to describe an entity having an outline that curves inwards. On the other hand, convex is used to describe an entity having an outline or surface that bulges out. The terms are used as...

Preschool is an institution that is meant for a child between infancy and school education. Preschool is a generic term to denote any type of institution that forms a part of elementary learning systems....

The words pretty and gorgeous are very similar to each other, but they differ in their uses. Pretty deals with the overall appearance, assuming it to be good and better, while gorgeous deals only with the...

Efficiency is the ability to do something or produce something without wasting materials, time or energy. It is the quality or degree of being efficient. Productivity is the rate at which goods are produced or...

Productivity is the rate at which goods are produced. Production is defined as the act of manufacturing goods for their use or sale.