I've downloaded a few idiom lists from various sources, including here, and have found that a some of the idioms listed do not match. For instance, one list says that "distinguish X from Y" is the correct idiom and another says "distinguish between X and Y" is right. Another example is one list says "compare to" describes unlike things and "compare with" describes like things. I then was reviewing another sentence correction/idiom guide, and it explains it in the exact opposite manner. This does not help with my studying and get more and more confused... besides the MGMAT SC
guide, what would be the best way to solve this problem? I do NOT want to be studying wrong material.