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materials; ingredients
material (for a novel, experiment, etc.); subject matter
grounds (for a decision, judgement, etc.); basis; evidence; data
(market) factor
料理の材料をスーパーで買いました。
I bought cooking ingredients at the supermarket.
その事件は彼の小説の材料になった。
That incident became material for his novel.
この料理の材料を買いに行きます。
I'm going to buy the ingredients for this dish.