Cool MateAn hour vs Duration
When to use each in English, with meaning, register, and examples.
An hour
Top 3,000 (common)
Duration
Top 2,000 (common)B2noun
Most common: Duration
| An hour | Duration | |
|---|---|---|
| Pronunciation | 🇬🇧 //ən ˈaʊə//🇺🇸 //ən ˈaʊər// | 🇬🇧 /["/djuˈreɪʃn/"]/🇺🇸 /["/duˈreɪʃn/"]/ |
| Meaning | A period of 60 minutes. | The length of time something lasts. |
| Example | The meeting lasted for an hour. | The school was used as a hospital for the duration of the war. |
| Register | Neutral | Neutral |
| How common | Top 3,000 (common) | Top 2,000 (common) |
| CEFR level | - | B2 |
| Part of speech | noun | |
| Collocations | for an hour, in an hour, wait an hour | brief, short, limited, decrease, reduce, shorten, for the duration (of), of… duration, throughout the duration of |
| Antonyms | - | moment, instant |
| Common mistakes | Incorrectly using 'an hour' when specifying a different time frame., Confusing 'an hour' with 'hours' for plural situations., Saying 'a hour' instead of 'an hour' due to pronunciation. | Confused with 'session', which refers to a specific meeting or period of activity., Using it incorrectly as a verb, e.g., 'to duration something.', Mixing it up with 'interval,' which refers to a break or pause rather than the length. |
| Usage notes | Used in both spoken and written English. Appropriate in everyday contexts, but might be avoided in more formal writing. | Commonly used in both formal and informal contexts. Refers to time periods, such as how long a movie is or how long an event lasts. Avoid using it in very casual conversations. |
See it in real clips
Frequently asked questions: An hour vs Duration
What's the difference between An hour and Duration?
An hour: A period of 60 minutes. Duration: The length of time something lasts.
Which is more common: An hour and Duration?
Duration is the most common in everyday English.
Can you show an example of each?
An hour: The meeting lasted for an hour. Duration: The school was used as a hospital for the duration of the war.
Can I use An hour and Duration interchangeably?
Not always. An hour and Duration are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.