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

右小括弧[migishoukakko] closing parenthesis
右中括弧[migichuukakko] closing brace
円弧[enko] arc
括弧[kakko] parentheses
丸括弧[marugakko] parentheses

弧城[kojou] solitary castle
弧を描く[kowoegaku] to draw an arc (e.g. with a compass)
弧光[kokou] arc light
弧状[kojou] in form of arch
弧線[kosen] arc (of a circle)