What is the difference between a planet and a star?

What is the difference between a planet a star the moon and the sun?

• Answer:

  a moon is simply a natural satellite that moves around a planet, tied gravitationally to its parent planet. a planet is a mass of rock and/or gases, formed from the solid and gaseous residue of the star they orbit that are sufficiently large enough to create orbits around their star without getting pulled into the star itself. a star is a large mass of gas that generates energy due to the thermonuclear fusion reactions happening at their cores. they range in size from a few kilometres in diameter to several times larger than the solar system. their size from lowest to highest is given by letters O B A F G K M which are star mass classes. they form large collections that make up star clusters and galaxies.