Plagiarism is using creative work without attribution (giving proper credit). Plagiarism is using someone else's words (or other creative output) and not giving them proper credit, suggesting that the words are your own. We cite sources to avoid plagiarism and provide attribution for quotations and paraphrasing in our work.
Copyright infringement is using creative work without permission. Copyright infringement happens whenever we use someone else's creative work without their permission. Does that mean that, every time we quote someone in our papers, we need to ask for their permission? No. This is because the copyright law has a concept called fair use built into it. More information is provided about fair use through this guide, but the kind of quoting that you would do in a paper would nearly always be a fair use.
So, it is possible to plagiarize without infringing copyright. It is also possible to infringe copyright without plagiarizing.
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How is copyright related to plagiarism?
Plagiarism is best defined as the unacknowledged use of another person’s work. It is an ethical issue involving a claim of credit for work that the claimant did not create. One can plagiarize someone else’s work regardless of the copyright status of that work. For example, it is nonetheless plagiarism to copy from a book or article that is too old to still be under copyright. It is also plagiarism to use data taken from an unacknowledged source, even though factual material like data may not be protected by copyright. Plagiarism, however, is easily cured – proper citation to the original source of the material.
Copyright infringement, on the other hand, is the unauthorized use of another’s work. This is a legal issue that depends on whether or not the work is protected by copyright in the first place, as well as on specifics like how much is used and the purpose of the use. If one copies too much of a protected work, or copies for an unauthorized purpose, simply acknowledging the original source will not solve the problem. Only by seeking prior permission from the copyright holder does one avoid the risk of an infringement charge.
What if I just take an idea from another source but do not copy the words?
Copyright does not protect ideas, only the specific expression of an idea. For example, a court decided that Dan Brown did not infringe the copyright of an earlier book when he wrote The Da Vinci Code because all he borrowed from the earlier work were the basic ideas, not the specifics of plot or dialogue. Since copyright is intended to encourage creative production, using someone else’s ideas to craft a new and original work upholds the purpose of copyright, it does not violate it. Only if one copies another’s expression without permission is copyright potentially infringed.
To avoid plagiarism, on the other hand, one must acknowledge the source even of ideas that are borrowed from someone else, regardless of whether the expression of those ideas is borrowed with them. Thus a paraphrase requires citation, even though it seldom raises any copyright problem.
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