Button fly is a style of pants closure where buttons are used to secure the fly instead of a zipper. While the term "button fly" is commonly used, there are several other synonymous terms that refer to the same style of closure. One of these is "button closure" or simply "button front." Other terms include "jeans with buttons," "button placket," and "button fly trousers." Many people prefer button fly closure for its classic and timeless look, as well as its durability. Whether you call it a button fly or a button front, this style of closure continues to be a popular choice among fashion enthusiasts and practical-minded individuals alike.