Radical Radical 火 (灬) means "fire". Kanji with radical 火: 黒 (black), 点 (spot), 然 (sort of thing), 熱 (heat), 煙 (smoke), 炭 (charcoal), 灯 (lamp), 焼 (bake), 照 (illuminate), 燃 (burn)...
火・漢字（Kanji with 火)
黒black点spot然sort of thing熱heat煙smoke炭charcoal灯lamp焼bake照illuminate燃burn灰ashes燥parch爆bomb災disaster熟mellow烈ardent煮boil炎inflammation炉hearth炊cook焦char煩anxiety煎broil熊bear