usage

(noun) the act of using. Synonyms: use, utilization, utilisation, employment, exercise. Examples: "He warned against the use of narcotic drugs." "Skilled in the utilization of computers."

(noun) accepted or habitual practice. Synonyms: custom, usance.

(noun) the customary manner in which a language (or a form of a language) is spoken or written. Examples: "English usage." "A usage borrowed from french."