usage
n.
c.1300, "established practice, custom," from Anglo-French and Old French usage "custom, habit, experience; taxes levied," from us, from Latin usus "use, custom" (see use, v.). From late 14c. as "service, use, act of using something."
〔李〕[us;-agen.] n.使用； 对待； 习惯 ←ut,us (L uti,usus)=to use 利用
〔蒋〕[us用，-age名词后缀] 使用，用法