A driver's licence is an official document that grants an individual the right to operate a motor vehicle. There are various synonyms for driver's licence, including driving permit, driving license, operator's license, and operator's permit. In some countries, driving credential is also used instead of driver's licence. Additionally, some states in the US could refer to a driver's license as a motorist's license. Regardless of the specialized terms used in different regions of the world, the crucial point is that a driver's licence is necessary for anyone who wants to operate a motor vehicle on public roads. It is always essential to carry a valid driver's licence while driving to avoid any legal complications.