In HTML, a checkbox is an input element that allows users to toggle between two states: checked and unchecked. It is commonly used in forms to present a binary choice, where a user can select or deselect an option.
In HTML, a "group checkbox" is not a specific element or feature. However, the term may be used to refer to a group of checkboxes that are related or used to select multiple options simultaneously. Essentially, it refers to having multiple checkboxes within a form where users can select one or more options from the group.
You can create a group of checkboxes by giving them the same name attribute but different value attributes. When the form is submitted, the server will receive the values of all the checked checkboxes with the same name as an array or a list.