空包[kuuhou] blank ammunition
こん包[konpou] packing
刺し身包丁[sashimibouchou] sashimi knife
紙包み[kamizutsumi] paper package
出刃包丁[debabouchou] knife

上包み[uwazutsumi] cover
内包[naihou] connotation
包み[tsutsumi] bundle
包みなく[tsutsuminaku] without concealment
包み隠し[tsutsumikakushi] concealment

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

梱包[konpou] packing
開梱[kaikon] open (as of a pack)
同梱[doukon] including something in a package

梱包材[konpouzai] packing material (boxes, insulation, shock resistance, etc.)
梱包費[konpouhi] packaging cost
梱る[kouru] to pack