功用

功用	gōng yòng	function
功	gōng	meritorious deed or service / achievement / result / service / accomplishment / work (physics)
用	yòng	to use; to make use of; to employ / (coverb) with; using / to need; to have to (usu. used in the negative or in questions) / usefulness; utility / (bound form) expense; outlay / (courteous) to eat; to drink / (literary) hence; therefore