usage

nouns

the act of using
"he warned against the use of narcotic drugs"; "skilled in the utilization of computers"
is derived from
accepted or habitual practice
is derived from
the customary manner in which a language (or a form of a language) is spoken or written
"English usage"; "a usage borrowed from French"
is a type of (narrower)
a systematic means of communicating by the use of sounds or conventional symbols
"he taught foreign languages"; "the language introduced is standard throughout the text"; "the speed with which a program can be executed depends on the language in which it is written"