A checkbox is a graphical user interface element that enables users to select one or more options from a list. It is also known as a tick box or a selection box. Other synonyms for this term include a check mark, a check box, a tick mark, and a selection button. In programming, a checkbox is often represented by a Boolean value, which is a variable that can be either true or false. Additionally, some programming languages refer to a checkbox as a toggle button or a radio button. Despite the different names, all of these elements serve the same purpose: to provide users with a convenient way to choose from multiple options.