下血[geketsu] bloody bowel discharge
壊血病[kaiketsubyou] scurvy
吸血[kyuuketsu] bloodsucking
吸血鬼[kyuuketsuki] vampire
給血[kyuuketsu] donation of blood

供血者[kyouketsusha] blood donor
凝血[gyouketsu] blood clot
血の巡りが悪い[chinomegurigawarui] dim-witted
血の巡りの悪い[chinomegurinowarui] dim-witted

黄鉄鉱[outekkou] iron pyrites
可鍛鉄[katantetsu] malleable iron
狭軌鉄道[kyoukitetsudou] narrow-gauge railway
近鉄[kintetsu] Kinki Nippon Tetsudou (railway co.)
剣付き鉄砲[kentsukideppou] fixed bayonet

甲鉄[koutetsu] armor
甲鉄艦[koutetsukan] armored ship
甲鉄板[koutetsuban] armor plate
鋼鉄[koutetsu] steel
国鉄[kokutetsu] national railway (esp. Japan National Railways)