Functionality

Noun

 * 1) The ability to perform a task or function; that set of functions that something is able or equipped to perform.
 * 2) 🇺🇸 In United States trademark law, the tendency of a product design to serve a function other than identification of the product, preventing that design from being protected as a trademark.
 * 3)  The presence of a functional group

Related terms

 * function
 * functional