Main entry: custom, usage, usance
Definition: accepted or habitual practice
Main entry: usage, use, utilisation, utilization, employment, exercise
Definition: the act of using
Usage: he warned against the use of narcotic drugs; skilled in the utilization of computers
Main entry: usage
Definition: the customary manner in which a language (or a form of a language) is spoken or written
Usage: English usage; a usage borrowed from French