僭する[sensuru] to usurp boastfully
僭位[seni] usurpation of a throne
僭越[senetsu] presumptuous
僭王[senou] usurper king
僭主[senshu] usurper

僭取[senshu] usurpation
僭称[senshou] pretension
僭上[senjou] audacity
僭用[senyou] using something belonging exclusively to someone else
僭上越権[senjouekken] exceeding (overstepping) one's powers (competence, authority)

コンピューター援用生産[konpyuutaaenyouseisan] computer-aided manufacture
コンピューター援用設計[konpyuutaaenyousekkei] computer-aided design
コンピュータ用語[konpyuutayougo] computerese
スキー用品[sukiiyouhin] ski outfit
愛用[aiyou] favorite

悪用[akuyou] abuse
医学用語[igakuyougo] medical term
医用[iyou] medical use
医療用[iryouyou] medical use
一人用[hitoriyou] for one person's use