詮術[sensube] (proper) methods
所詮[shosen] after all
詮索[sensaku] inquiry into
詮方[senkata] required means
詮ない[sennai] unavoidable

詮議[sengi] discussion
詮索好き[sensakuzuki] nosy person
詮議立て[sengidate] considering thoroughly
詮方無い[senkatanai] it cannot be helped

安全[anzen] safety
安全域[anzeniki] safety margin
安全運転[anzenunten] safe driving
安全器[anzenki] safety device
安全期[anzenki] safe period

安全教育[anzenkyouiku] safety education
安全性[anzensei] safety
安全対策[anzentaisaku] safety measure
安全第一[anzendaiichi] safety first
安全地帯[anzenchitai] safety zone