Answer:

opposites

Answer	Crossword Clue
OPPOSITES	Black and white
OPPOSITES	To and fro, for example
OPPOSITES	Yin and yang

OPPOSITES	Completely different pair
OPPOSITES	North and south, e.g.
OPPOSITES	They attract
OPPOSITES	Night and day, say

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.