I often see this phrase “compare and contrast” in questions, exams, essay papers and etc.
After “googling” around and analyzing them, I am able to provide simple explanation, easy to digest!

Definition of Compare and Contrast

Compare explains how two items are similar.
Contrast emphasizes the differences rather than the similarities.

Compare
To examine the character or qualities of, as of two or more persons or things, for the purpose of discovering their resemblances or differences; to bring into comparison; to regard with discriminating attention.

Contrast
To set in opposition, or over against, in order to show the differences between, or the comparative excellences and defects of; to compare by difference or contrariety of qualities; as, to contrast the present with the past.