Copyright: These are the rights that businesses or people have when they are the original creator or owner of something online. If you want to use something that is not free to anyone, you have to request access or use of the material by the copyright owner.
Example: Unable to post a video with lyrics or the sound of a song because you do not own the rights to the music.
Fair Use: This allows you to use the material by the copyright owner in a certain or specific way without claiming the work as your own. The reason for using the material decides whether using the copyright material is justified or not.
Example: Using copyright material to criticize, teach, news or other specific but justifiable reasons