What is the difference between path and theme path in theme registry?
From the hook_theme() docs:


path: Override the path of the file to be used. Ordinarily the module or theme path will be used, but if the file will not be in the default path, include it here. This path should be relative to the Drupal root directory.
theme path: (automatically derived) The directory path of the theme or module, so that it doesn't need to be looked up.