What context can I use each word in?
Learn when and how to use these words with these examples!
rust
Example
The old car had a lot of rust on its body. [rust: noun]
Example
If you leave metal outside in the rain, it will eventually rust. [rust: verb]
decay
Example
The fallen leaves on the ground were in various stages of decay. [decay: noun]
Example
If you don't take care of your teeth, they will decay over time. [decay: verb]
Good things to know
Which word is more common?
Decay is a more commonly used word than rust in everyday language, as it has a broader scope and can apply to a wider range of materials and contexts.
What’s the difference in the tone of formality between rust and decay?
Both rust and decay can be used in formal and informal contexts, but rust may be more commonly used in technical or specialized fields related to metalworking or engineering.
