A meteor is an object that enters the Earth's atmosphere and burns up due to friction. There are various synonyms for the word "meteor" which include shooting star, falling star, fireball, and bolide. Shooting star is used to describe the bright streak of light in the sky that is caused by a meteor. Falling star has the same meaning but is more commonly used in casual conversations. Fireball is generally used for a larger and brighter meteor. Bolide is used to describe a very bright meteor that explodes before it reaches the ground. All these synonyms are used interchangeably to describe the same phenomenon of a meteor entering the Earth's atmosphere.