いとも簡単に[itomokantanni] very easily
一了簡[ichiryoukan] at one's discretion
簡易[kani] simplicity
簡易化[kanika] simplification
簡潔[kanketsu] brevity

簡素[kanso] simplicity
簡素化[kansoka] simplification
簡体字[kantaiji] simplified Chinese character
簡短[kantan] simple
簡単に言うと[kantanniiuto] simply put

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