A Usage

1. The manner or the amount of using; use.
2. Habit or accepted practice.
3. (lexicography) The ways and contexts in which spoken and written words are used, determined by a lexicographer's intuition or from corpusanalysis.
   1. Correct or proper use of language, proclaimed by some authority.
   2. Geographic, social, or temporal restrictions on the use of words.
4. (obsolete) The treatment of someone or something.