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

荊棘[odoro] briars
棘皮動物[kyokuhidoubutsu] echinoderm
荊棘[keikyoku] wild rose
荊棘線[barasen] barbed wire

骨棘[kotsukyoku] bone spur
棘魚[togeuo] stickleback (any fish of family Gasterosteidae)
棘鼠[togenezumi] Ryukyu spiny rat (Tokudaia osimensis)
棘条[kyokujou] spiny ray (of a fin)