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)

吾亦紅[waremokou] burnet
口紅[kuchibeni] lipstick
紅焔[kouen] red flame
紅花[benibana] safflower
紅海[koukai] Red Sea

紅冠鳥[koukanchou] cardinal (bird) (Cardinalis cardinalis)
紅顔[kougan] rosy cheeks
紅唇[koushin] red lips
紅藻[kousou] red algae
紅茶[koucha] black tea