FUNCTIONALITY
functionality
(noun) capable of serving a purpose well; “software with greater functionality”
Source: WordNet® 3.1
Etymology
Noun
functionality (countable and uncountable, plural functionalities)
(uncountable) The ability to perform a task or function; that set of functions that something is able or equipped to perform.
(US, legal, uncountable) 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.
(organic chemistry, countable) The presence of a functional group.
Source: Wiktionary