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

肋骨[abarabone] rib
肋間神経痛[rokkanshinkeitsuu] intercostal neuralgia
肋膜[rokumaku] pleura
肋木[rokuboku] wall bars
肋肉[baraniku] boned rib (esp. of pork or beef)

中肋[chuuroku] midrib
肋凹[rokuou] costal fovea
肋材[rokuzai] lumber (for the ribs of a ship)
肋筋[rokkin] stirrup (in reinforced concrete construction)