What's the definition of Friendship?

Friendship is the cooperative and supportive relationship between two or more people. In this sense, the term connotes a relationship which involves mutual knowledge, esteem, affection, and respect along with a degree of rendering service to friends in times of need or crisis.

This definition is from Wikipedia:
http://en.wikipedia.org/wiki/Friendship

To feel as a team with never fear of betrayal.

I looked this up on Google. The definition for friends or friendship:
The state of being friends.