草臥れる[kutabireru] to get tired
遺草[isou] posthumous works
一年草[ichinensou] annual (plant)
詠草[eisou] draft poem
下草[shitakusa] undergrowth

仮名草紙[kanazoushi] story in the kana
伽草子[togizoushi] fairy-tale book
海草[kaisou] marine plant
乾草[kansou] hay
甘草[kanzou] liquorice

蛍光塗料[keikoutoryou] fluorescent paint
蛍光物質[keikoubusshitsu] fluorescent substance
蛍狩り[hotarugari] firefly catching
蛍雪の功[keisetsunokou] the fruit of diligent study
蛍火[hotarubi] light of a firefly

蛍光[keikou] fluorescence
蛍光燈[keikoutou] fluorescent lamp
蛍烏賊[hotaruika] firefly squid (Watasenia scintillans)
蛍石[hotaruishi] fluorite