"Copyright is a form of protection provided by the laws of the United States for original works of authorship, including literary, dramatic, musical, architectural, cartographic, choreographic, pantomimic, pictorial, graphic, sculptural, and audiovisual creations.
'Copyright' literally means the right to copy. The owner of copyright has the exclusive right to reproduce, distribute, and, in the case of certain works, publicly perform or display the work; to prepare derivative works; in the case of sound recordings, to perform the work publicly by means of a digital audio transmission; or to license others to engage in the same acts under specific terms and conditions."
The Oxford English Dictionary defines plagiarism as "the action or practice of taking someone else's work, idea, etc., and passing it off as one's own; literary theft."
How to Recognize Plagiarism - Great tutorial from Indiana University on how to avoid plagiarism in your writing. Provides word-for-word and paraphrasing plagiarism examples, practice areas with feedback, and a test with feedback and completion certificate.
Plagiarism - Collection of annotated links on plagiarism from Sharon Stoerger MLS, MBA.