When you need to compare two or more things, you may find yourself using the phrase "run a comparison." However, there are many alternative synonyms that you can use to express the same idea. For example, you might use "perform a contrast," "conduct an analysis," "undertake a comparison," or "execute a side-by-side evaluation." Other options include "initiate a comparison," "carry out a comparative study," "undertake a parallel examination," or "implement a comparative review." No matter what language you use, the goal is to find a way to explore the similarities and differences between two or more subjects, products, or concepts.