Sharpens a distinction is a phrase used to indicate a clear difference between two or more things. There are several synonyms that can be used instead of this phrase. Some of the options include specifying, clarifying, differentiating, emphasizing, dividing, separating and delineating. These words provide a more concise and direct way of expressing the idea of making a distinction or difference clearer. Other synonyms that may be used are distinguishing, demarcating, segregating, categorizing, and discerning. Each of these words adds a different flavor to the idea of making a clear distinction and provides a more nuanced definition of the differentiation process.