Teamwork is a joint action by two or more people, in which each person contributes with different skills and express his or her individual interests and opinions to the unity and efficiency of the group in order to achieve common goals.
This does not mean that the individual is no longer important; however, it does mean that effective and efficient teamwork goes beyond individual accomplishments. The most effective teamwork is produced when all the individuals involved harmonize their contributions and work towards a common goal.
In order for teamwork to succeed one must be a teamplayer. A teamplayer is one who subordinates personal aspirations and works in a coordinated effort with other members of a group, or team, in striving for a common goal. Businesses and other organizations often go to the effort of coordinating team building events in an attempt to get people to work as a team rather than as individuals. (Wikipedia).
May be this video can explain it very well .
Good luck, leave comments!