悪材料[akuzairyou] adverse stock-market factors
医療材料[iryouzairyou] medical supplies
逸材[itsuzai] outstanding talent
印材[inzai] seal stock
画材[gazai] matter for painting

角材[kakuzai] squared timber
割り材[warizai] split log
乾材[kanzai] dry lumber
乾燥材[kansouzai] seasoned lumber
丸太材[marutazai] round timber

圧延鋼[atsuenkou] rolled steel
丸鋼[marukou] round steel bar
協力鋼[kyouryokukou] high-tension steel
鋼管[koukan] steel pipe
鋼玉[kougyoku] corundum

鋼材[kouzai] steel material
鋼索[kousaku] cable
鋼線[kousen] steel wire
鋼鉄[koutetsu] steel