material, substance
Example sentences
探検隊の供給物質はやがて底をついた。
The expedition's supplies soon gave out.
水と氷は形は異なるが、同じ物質だ。
Water and ice are the same substance in different forms.
光の波は空間や様々な種類の物質の中を通って進む。
Light waves travel through space and various kinds of materials.