Plagiarism is when you present someone else's work or ideas as your own. It can be accidental or intentional and is considered academic cheating.
Plagiarism is viewed as a serious form of academic misconduct and against the IU Code of Student Rights, Responsibilities, & Conduct, so it's essential to acknowledge and include citations for information taken from other authors or sources.
Plagiarism can be:
This visual guide can help you avoid plagiarism:
Detailed Description of "A General Guide to Understanding Written Plagiarism"
For more on citing and using sources see Quoting and Paraphrasing, and Integrating Sources into your Paper.