What is the difference between "fees" and "costs"?

Fees are the amount you will pay for the professional services provided by the attorney and his or her staff on your case. In addition to the attorney’s fees for professional services, you will be expected to pay for costs.  Costs typically include any filing fees charged by the Bureau of U.S. Citizenship & Immigration Service and courts, as well as other expenses such as postage, overnight delivery, photocopying, long-distance charges, etc.  You should discuss with your attorney what is included in the quoted price as well as an estimate of the other expenses that may be incurred.