demand — If one thing demands another, the first needs the second in order to happen or be dealt with successfully.
call — a demand for redeemable bonds or shares to be presented for repayment
charge — If you charge someone an amount of money, you ask them to pay that amount for something that you have sold to them or done for them.
claim — If you say that someone claims that something is true, you mean they say that it is true but you are not sure whether or not they are telling the truth.
contribution — If you make a contribution to something, you do something to help make it successful or to produce it.
fee — a charge or payment for professional services: a doctor's fee.
levy — an imposing or collecting, as of a tax, by authority or force.
payment — something that is paid; an amount paid; compensation; recompense.
request — the act of asking for something to be given or done, especially as a favor or courtesy; solicitation or petition: At his request, they left.
requirement — that which is required; a thing demanded or obligatory: One of the requirements of the job is accuracy.
