What context can I use each word in?
Learn when and how to use these words with these examples!
extension
Example
We need to build an extension to our house to accommodate our growing family. [extension: noun]
Example
The deadline for the project has been extended by two weeks. [extended: verb]
addition
Example
I made an addition to the recipe by adding some extra spices. [addition: noun]
Example
She added her name to the list of volunteers for the event. [added: verb]
Good things to know
Which word is more common?
Addition is more commonly used than extension in everyday language. Addition is versatile and covers a wide range of contexts, while extension is less common and refers to a specific type of change.
What’s the difference in the tone of formality between extension and addition?
Both extension and addition can be used in formal and informal contexts, but extension may be more formal due to its technical connotations in certain fields, such as architecture or computer science.
