古往今来[kooukonrai] in all ages
古今[kokon] ancient and modern times
古今東西[kokontouzai] all times and places
古今無類[kokonmurui] best ever

今か今か[imakaimaka] eagerly waiting
今が今[imagaima] just now
今が今まで[imagaimamade] till just now
今しがた[imashigata] moment ago

一際[hitokiwa] conspicuously
学際的[gakusaiteki] interdisciplinary
真際[magiwa] on the verge of
金輪際[konrinzai] the deepest bottom of the earth
交際[kousai] company

交際家[kousaika] sociable person
交際嫌い[kousaigirai] unsociable
交際好き[kousaizuki] sociable
交際国[kousaikoku] friendly powers
交際社会[kousaishakai] society