What context can I use each word in?
Learn when and how to use these words with these examples!
vital
Example
Water is vital for human survival. [vital: adjective]
Example
The team's star player is vital to their success. [vital: adjective]
Example
Proper communication is vital to the success of any business. [vital: adjective]
key
Example
Time management is key to completing the project on time. [key: adjective]
Example
The key to a successful relationship is communication. [key: noun]
Example
The company's marketing strategy was a key factor in their growth. [key: adjective]
Good things to know
Which word is more common?
Key is more commonly used than vital in everyday language, due to its versatility and wider range of contexts.
What’s the difference in the tone of formality between vital and key?
Key is generally considered more formal than vital, making it more appropriate for use in formal or professional contexts.
