function
/ˈfəŋ(k)-shən/
noun
professional or official position : occupation
the action for which a person or thing is specially fitted or used or for which a thing exists : purpose
any of a group of related actions contributing to a larger action; especially : the normal and specific contribution of a bodily part to the economy of a living organism
His job combines the functions of a manager and a worker.
verb
an attributive noun functions as an adjective
noun
any of a set of keys on a computer keyboard that have or can be programmed to have special functions