Expiry-Expiration | Commonly Confused Words

Expiry

/ɪkˈspaɪəri/

The end of the period during which something is valid or functional

/ˌekspəˈreɪʃən/

The process of something coming to an end or no longer being valid.

Both expiry and expiration relate to the end of a period of validity for something, but they are used differently depending on the context and region.
Expiry is more commonly used in British English, while expiration is more prevalent in American English.
Think of expiration as a more formal term commonly used in legal or official documents in the U.S.
Expiry can often be seen more in everyday contexts, such as on food labels or medication packages in the UK.
Remember, both terms imply a conclusion or end but vary in usage based on regional preferences.