What is the difference between Trade-off conversation and Concessions conversation in the negotiation process?

"Yes" Strategy style is Trade Off conversation method in Negotiation where you show a positive attitude in closing the deal with some additional demands. It is the style "If so.........we will consider". ----Pressure tactics by a forcing tendency.

"NO" strategy style is Concessions conversation method in Negotiation where you show a negative attitude in coming to a conclusion with extra demands.  It is the style "Otherwise......we are not interested" --Pressure tactics by a skipping tendency.

A trade-off conversation might go like this: “If you give me a2% discount, we’ll sign right now, two weeks earlier than we had planned to, and letting this deal come in before the end of the quarter.

A concessions conversation might go like this: “Give us a2% discount, or we’ll take our business elsewhere.”

Agree with the answers added by gentlemen above.

Competing style vs Compromising style

I agree with all answers given by colleagues.

Trade of Conversation is on  Dealing stage  of Convincing your Client to purchased your product using some Magic word for them to believe and purchased items .while negotiation process is About to pay the number of amount which Both Side Agreed.  

Thanks for the invitation

Very good question

Agreed with both description given by

Mr.: Vrindavan & Mr.:Pathiyil as well too

in fact both of them did it fullest & no more to add

I think it is already best explained by Mr. Pathiyil with an Example, Mr. Vrindavan with an Terminological Explanation &  briefly concluded by Mr. Jetley.

As there is nothing left to me to add a value for this question :-)

Thanks for beautiful  answers by the experts.