What Does Cooperate Mean?

Co-operate means you work together in a team well and you get along with eachother.
If you don't get along with your team mates, you wont have good co-operation. It also means, if you get stuck on something, you will need to find someone who is good to co-operate with, so they can help you without picking a fight :)

To cooperate means to work together at finding a solution, rather than against each other.  As well, sometimes you may need help with something, so you find someone who is willing to cooperate, help :)

To work to gather in a team and try not to fight