Answer:

interdependence

Answer	Crossword Clue
INTERDEPENDENCE	Symbiosis
INTERDEPENDENCE	Mutual reliance.
INTERDEPENDENCE	Theme of a J. F. K. address.

INTERDEPENDENCE	Togetherness, in a way.
INTERDEPENDENCE	Mutual reliance
INTERDEPENDENCE	Reciprocal relationship

Crossword

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