Negotiations

Have you ever negotiated?

I guess yes. You might have negotiated for a remote-control or your elder sister's bag or for something more serious, like contract, delivery or payment terms. 

There are many various resources connected with negotiation vocabulary. I strongly advise you to use BBC and British council materials to help you to enlarge your negotiations vocabulary. Using these two sources and a few business books I've elaborated a worksheet called "Negotiations", it can be downloaded here. Hope, you'll find it helpful.