Quoting and paraphrasing
Quoting is using someone else's exact words.
Quotations are indicated by the use of quotation marks around the quote and by the presence of a citation.
Paraphrasizing is putting the information you read into your own words. Paraphrasing is not simply rearranging or rewording the original passage.
Paraphrasing consists of reading the original passage, understanding what the original author is saying, and then expressing your understanding of these ideas in your own words.
Even if you are using your own words, the ideas are being still taken from someone else so they must be cited.