to cooperate; to collaborate; to work together

Obviously, this cannot be the work of one person. This is why Tatoeba is collaborative.

I want to work with your company.

If you need to use the services of a company, you may be interested to know what standards they work towards before choosing to work with them.

No one could predict the outcome of this cooperation.

I congratulate him, I congratulate Governor Palin for all that they've achieved. And I look forward to working with them to renew this nation's promise in the months ahead.