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

異朝[ichou] foreign court
一朝[icchou] temporarily
一朝一夕[icchouisseki] in a day
一朝一夕に[icchouissekini] in a day
王朝[ouchou] dynasty

元朝[ganchou] New Year's morning
今朝方[kesagata] this morning
参朝[sanchou] visiting the palace
正朝[seichou] legitimate dynasty
早朝[souchou] early morning