A paraphrase is similar to a summay since they both require other writers to restate the information in their own words.
Both a paraphrase and a summary are also similar in the fact that they do not distort the meaning of the original passage.
However, they have certain differences, for instance:
A summary is much shorter than the original passage, while a paraphrase is roughly the same length, and even sometimes a bit longer, than the original passage.
A summary can be selective, but a paraphrase is specific and should not be selective. Since a paraphrase normally deals with a very specific portion of a text, the paraphrase should include all the elements of that portion.
