アーク燈[aakutou] arc light
懐中電燈[kaichuudentou] electric torch
街燈[gaitou] street light
幻燈[gentou] slide projector
行燈[andou] fixed paper-enclosed lantern

石燈籠[ishidourou] stone lantern
提燈[chouchin] paper lantern
電燈[dentou] electric light
燈台[toudai] lighthouse
燈明[toumyou] light offered to a god or Buddha

螢雪[keisetsu] diligent study
螢火[keika] light of a firefly
螢光[keikou] fluorescence

螢光燈[keikoutou] fluorescent lamp
螢石[keiseki] fluorite
螢光ペン[keikoupen] highlighter