Quoting someone without using quotes and without identifying the source.
Paraphrasing without giving the source.
Patchwriting is a botched attempt at paraphrasing in which just one or two words are different.
Borrowing someone else's thinking or logical approach without identifying it.
Pretending that someone else's idea is your idea.
Avoid trouble by Identifying sources, citing, and using quotations.
When you write a paper and want to show that information used comes from somebody else, you have some choices of how to do that. Either quote, paraphrase, or summarize.
What is a quotation?
What is paraphrasing?
What is summarizing?
You don't need to cite common knowledge