Answer:

spheroid

Answer	Crossword Clue
SPHEROID	Earth, for one
SPHEROID	Egg, for instance
SPHEROID	Earth, e.g.

SPHEROID	The earth is one.
SPHEROID	Egg yolk, e.g.
SPHEROID	Thing shaped like Earth

Crossword

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