Answer:
contrast
Step-by-step explanation:
Comparing two things, two things you have read in this particular example, means that you look for their similarities and/or differences.
For example, two poems may have similar theme, or two novels may have similar plot, but different settings etc.
Often, this process of comparing can be the task of a compare and contrast essays.
Whatever it may be, when comparing two works (or things, or whatever) and emphasizing their differences, that means we contrast them.