A watch is usually attached to a strap or band worn around the wrist. A clock is an instrument for calculating time.

When the light falls on any surface, a part of that light is sent back to the same medium. This is known as reflection. When the light bounces back from its normal lane, it is termed as refraction.

Conference is an event that is organized for profit or non-profit organizations to discuss the matter or the pressing issues. Meeting generally refers to an assembly of people that has a specific purpose....

Quick is anything which specifies movement. Fast term is usually used to specify rate.

A palace is built with a purpose of constructing spacious halls and rooms primarily meant for comfort. Mansion is a large stately house.