Copyright literally means the right to copy. It has come to mean the author or creator of a literary, musical, or artistic work holds the exclusive legal right to reproduce, publish, sell, or distribute it or to make changes to create a derivative work. The current copyright term is the life of the author plus 70 years. A work that no longer has copyright protection is in the public domain.
Fair use is "a legal doctrine that portions of copyrighted materials may be used without permission of the copyright owner provided the use is fair and reasonable, does not substantially impair the value of the materials, and does not curtail the profits reasonably expected by the owner." (Merriam-Webster Online Dictionary)
Professor Eric Faden of Bucknell University used video excerpts from Disney characters to produce an informative 10-minute video on copyright and fair use. The video is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License.
"Creative Commons helps you legally share your knowledge and creativity to build a more equitable, accessible, and innovative world. We unlock the full potential of the internet to drive a new era of development, growth and productivity. Creative Commons provides free, easy-to-use copyright licenses to make a simple and standardized way to give the public permission to share and use your creative work–on conditions of your choice." (from "What We Do", retrieved September 12, 2018)
For more on CC licenses, see the document below, adapted from http://www.creativecommons.org by Anita Walz CC BY 4.0
Here's a video from CreativeCommons.org (posted on YouTube) that explains Creative Commons licensing