also: サブスティチュート
noun
A direct loanword from English, used in contexts like sports, cooking, or general replacement. Often interchangeable with 代替 (だいたい) or 代わり (かわり), but carries a slightly more technical or foreign feel.
彼は試合の後半でサブスティテュートとして出場した。
He came on as a substitute in the second half of the match.
このレシピでは
In this recipe, you can use margarine as a substitute for butter.