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

日陰鬘[hikagenokazura] running ground pine (species of club moss, Lycopodium clavatum)
華鬘草[kemansou] bleeding heart
百日鬘[hyakunichikazura] long-haired wig used in kabuki (used metaphorically to refer to a thick growth)

華鬘[keman] Buddhist decoration engraved with various motifs, often made from gilt copper (e.g. for adorning the inner shrine of a temple)
目鬘[mekazura] simple paper mask