一元[ichigen] unitary
一元化[ichigenka] unification
一元的[ichigenteki] monistic
一元論[ichigenron] monism
一次元[ichijigen] one dimensional

一新紀元[isshinkigen] new era
隠元[ingen] beans
隠元豆[ingenmame] common bean (Phaseolus vulgaris)
家元[iemoto] head of a school (of music, dance)
火の元[hinomoto] origin of fire

御前[omai] you (formerly honorific, now sometimes derog. term referring to an equal or inferior)
御前さん[omaesan] you
已前[izen] ago
以前に[izenni] ago
一人前[ichininmae] becoming adult

一人前になる[ichininmaeninaru] to come of age
一昔前[hitomukashimae] long ago
一歩前進[ippozenshin] (a) step forward
駅前[ekimae] in front of station
駅前通り[ekimaedoori] street in front of station

ジュラ紀[juraki] Jurassic Period
一新紀元[isshinkigen] new era
一世紀[isseiki] century
紀伊國屋[kinokuniya] Kinokuniya
紀元[kigen] era

紀元後[kigengo] post-era
紀元前[kigenzen] pre-era
紀行[kikou] traveller's journal
紀行文[kikoubun] traveller's journal
紀要[kiyou] bulletin