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