Moron is a person who is extremely frustrating and usually lacking in superior judgment. Retard is a person who is mentally retarded or uneducated.

A Moron is a person who is notably stupid and frustrating or lacking in good judgment. A person who is lacking in cleverness, understanding or reasoning is stupid.

Can is used as an auxiliary to indicate ability, skill, or fitness to perform a task. Whereas, Could is used as an auxiliary to make the past tense of can.

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...