A plugin is a piece of software containing a group of functions that can be contributed to a WordPress website.
http://zandertcnt482.image-perth.org/a-plugin-is-a-piece-of-software-containing-a-group-of-functions-that-can-be-added-to-a-wordpress-site
A plugin is a piece of software consisting of a group of functions that can be contributed to a WordPress website.