What context can I use each word in?
Learn when and how to use these words with these examples!
world
Example
The world is facing a climate crisis. [world: noun]
Example
She has traveled the world and experienced many different cultures. [world: noun]
planet
Example
Jupiter is the largest planet in our solar system. [planet: noun]
Example
She is studying the geology of planets in her astronomy class. [planetary: adjective]
Good things to know
Which word is more common?
World is more commonly used than planet in everyday language, as it has a broader range of meanings and applications. Planet is more commonly used in scientific and academic contexts.
What’s the difference in the tone of formality between world and planet?
Planet is generally more formal than world, as it is often used in technical or scientific contexts. However, both words can be used in a variety of formality levels depending on the context and audience.