From a page move: This is a redirect from a page that has been moved/renamed. This page was kept as a redirect to avoid breaking links that may have been made, both internally and externally, to the old article title. This template automatically tags any redirect that results from a page move. For more information, see the category.
From incorrect name: This is a redirect from an erroneous name, i.e., either an incorrect name or a title that is unsuitable as a Wikipedia article. The correct name is given by the target of the redirect. Pages using this link should be updated to link directly to the target without the use of a piped link that hides the correct details. For more information, follow the category link and see the template documentation.