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The phrase is a common collocation used to describe providing something valuable to a project, discussion, or society. Common Exam Contexts
Depending on the specific nuance of your text, other nouns might fit, though "contribution" is the most frequent exam answer: If the text is about evaluating two things. 1_5170249629123478027
Used in the phrase "make a difference," though "useful difference" is less common than "useful contribution." The phrase is a common collocation used to