幻を追う[maboroshiwoou] to pursue an illusion
幻影[genei] phantom
幻覚[genkaku] hallucination
幻覚剤[genkakuzai] hallucinogen
幻姿[genshi] apparition

幻視[genshi] visual hallucination
幻想[gensou] illusions
幻想劇[gensougeki] non-realistic drama
幻像[genzou] phantom

錦鯉[nishikigoi] coloured carp
真鯉[magoi] black carp
緋鯉[higoi] red carp
鯉幟[koinobori] carp streamer
鯉口[koiguchi] mouth of a (sword) sheath

養鯉[youri] carp breeding
俎の鯉[manaitanokoi] confronted with a hopeless situation
鯉ヘルペスウイルス[koiherupesuuirusu] koi herpes virus (KHV)
寒鯉[kangoi] koi carp caught during the cold season