Paraphrasing expresses the same concept with different wording while summarizing is a quick overview of key main points of something that is explained in about a couple of sentences.
The terms paraphrasing and summarizing often confuse students of English. ... The paraphrase is about the same length as the original since the purpose is to rephrase without leaving out anything, and not to shorten. Summarizing, on the other hand, is putting down the main ideas of someone else's work in your own words.