Travel is the transport of people on a trip/journey or the process or time involved in a person or object moving from one location to another. Reasons for travel include:

Tourism—travel for recreation. This may apply to the travel itself, or the travel may just be the necessary investment to arrive at a desired location.

Visiting friends and family

Trade

Commuting–going to various routine activities, such as work or meetings.

Migration—travel to begin life somewhere else; nomadic people do this

Pilgrimages—travel for religious reasons

The word originates from the Middle English word travailen ("to toil"), which comes from the French word travailler ("travail").

 

from : en.wikipedia.org