ぴかぴか光る[pikapikahikaru] to sparkle
旭光[kyokkou] rays of the rising sun
威光[ikou] power
稲光[inabikari] (flash of) lightning
曳光弾[eikoudan] tracer bullet

栄光[eikou] glory
円光[enkou] halo
炎光[enkou] flame
黄道光[koudoukou] zodiacal light
可視光線[kashikousen] visible ray

火焔放射器[kaenhoushaki] flamethrower
気焔万丈[kienbanjou] in high spirits
光焔[kouen] light and flame
紅焔[kouen] red flame
火焔[kaen] flame

情焔[jouen] burning passion
気焔[kien] high spirits
焔硝[enshou] gunpowder
残焔[zanen] lingering heat (in autumn)