会社概要[kaishagaiyou] company overview
概要[gaiyou] outline
肝要[kanyou] essential
紀要[kiyou] bulletin
強要[kyouyou] coercion

緊要[kinyou] momentous
緊要地形[kinyouchikei] key terrain
公教要理[koukyouyouri] Catholic catechism
構成要素[kouseiyouso] components
綱要[kouyou] elements

永訣[eiketsu] last farewell
訣別[ketsubetsu] separation
秘訣[hiketsu] secret (method, trick, etc.)

要訣[youketsu] main point
訣辞[ketsuji] words of parting
訣絶[ketsuzetsu] breaking off a relationship