What is the difference between galaxy and star?

galaxy | star |

Galaxy is a see also of star.

As nouns the difference between galaxy and star

is that galaxy is {{context|now|_|rare|lang=en}} the milky way; the apparent band of concentrated stars which appears in the night sky over earth {{defdate|from 14th c}} while star is any small luminous dot appearing in the cloudless portion of the night sky, especially with a fixed location relative to other such dots.

As a verb star is

to appear as a featured performer or headliner, especially in an entertainment program.