Cool MateAge vs Century vs Era
When to use each in English, with meaning, register, and examples.
Age
Century
Era
| Age | Century | Era | |
|---|---|---|---|
| Pronunciation | 🇬🇧 /["/eɪdʒ/"]/🇺🇸 /["/eɪdʒ/"]/ | 🇬🇧 //ˈsɛnʧəri//🇺🇸 //ˈsɛnʧəri// | 🇬🇧 /["/ˈɪərə/"]/🇺🇸 /["/ˈɪrə//ˈerə/"]/ |
| Meaning | The number of years someone has lived. | A period of 100 years. | A long period of time with special events or features. |
| Example | Her age is just a number. | The 21st century started in the year 2001. | The Victorian era was marked by significant cultural and industrial change. |
| Register | Neutral | Neutral | Neutral |
| How common | Top 1,000 (very common) | Top 1,000 (very common) | Top 2,000 (common) |
| CEFR level | A1 | A1 | B2 |
| Part of speech | noun | noun | noun |
| Collocations | early, tender, young, attain, get to, live to, group, range, limit, at a/the age, between the ages, by the age, the age of consent, somebody’s own age, years of age, spend, take, absolutely ages, ages ago, for ages, early, tender, young, attain, get to, live to, group, range, limit, at a/the age, between the ages, by the age, the age of consent, somebody’s own age, years of age, another, bygone, different, during the… age, in a/the age, through the ages, in this day and age | 21st century, mid-century, turn of the century | golden, great, new, herald, mark, usher in, begin, end, during an/the era, in an/the era, into era, the beginning of an era, the dawn of an era, the dawning of an era |
| Antonyms | youth, childhood | moment, instant | moment, instant |
| Common mistakes | Using 'age' as a verb incorrectly, e.g., 'I age 25.', Confusing 'age' with 'stage', e.g., 'In this stage of my life.', Saying 'more old' instead of 'older.' | Confused with 'decade', which means 10 years., Using 'centuries' incorrectly as a singular noun. | Confused with 'error' — they sound similar but have different meanings., Using 'era' for short-term events rather than long periods., Mixing up 'era' with 'area' in writing or speech. |
| Usage notes | Used in both informal and formal contexts. Be careful not to confuse 'age' with phrases like 'young' or 'old' when describing someone. | Use 'century' when discussing historical periods or time. Avoid using it in casual contexts unrelated to time. | Use 'era' when describing significant periods in history, culture, or personal life. Avoid using it for shorter time frames which might be referred to as 'period' or 'stage'. |
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Frequently asked questions: Age vs Century vs Era
What's the difference between Age, Century, and Era?
Age: The number of years someone has lived. Century: A period of 100 years. Era: A long period of time with special events or features.
Which is more advanced: Age, Century, and Era?
Era is the highest level, at B2, on the CEFR scale.
Are Age, Century, and Era the same CEFR level?
Age: A1, Century: A1, Era: B2 on the CEFR scale.
What part of speech are Age, Century, and Era?
Age: noun, Century: noun, Era: noun.
Can you show an example of each?
Age: Her age is just a number. Century: The 21st century started in the year 2001. Era: The Victorian era was marked by significant cultural and industrial change.
Can I use Age, Century, and Era interchangeably?
Not always. Age, Century, and Era 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.