"A fair use is any copying of copyrighted material done for a limited and “transformative” purpose, such as to comment upon, criticize, or parody a copyrighted work. Such uses can be done without permission from the copyright owner. In other words, fair use is a defense against a claim of copyright infringement. If your use qualifies as a fair use, then it would not be considered an infringement."
Section 107 of the Copyright Act "calls for consideration of the following four factors in evaluating a question of fair use:
Creative Commons licneses "allow creators to communicate which rights they reserve, and which rights they waive for the benefit of recipients or other creators." These licenses do not replace copyright, but are based upon it. They replace individual negotiations for specific rights between copyright owner (licensor) and licensee."