Compare to Show How Different They Are
This page is the CodyCross answer for the clue below from Seasons, Group 78, Puzzle 5 (Northern Lights).
Question is: Compare to Show How Different They Are
and the answer is: CONTRAST
Word Meaning:
CONTRAST — (countable) A difference in lightness, brightness or hue between two colours that makes them more or less distinguishable.
Definitions from Wiktionary.