Cool MateExpert vs He's really good
When to use each in English, with meaning, register, and examples.
Expert
Top 1,000 (very common)A2noun
He's really good
Top 5,000 (fairly common)
Most common: Expert
| Expert | He's really good | |
|---|---|---|
| Pronunciation | 🇬🇧 /["/ˈekspɜːt/"]/🇺🇸 /["/ˈekspɜːrt/"]/ | 🇬🇧 //hiːz ˈrɪəliɡʊd//🇺🇸 //hiz ˈrɪliɡʊd// |
| Meaning | A person who knows a lot about something. | He is very skilled or talented. |
| Example | The expert in the field gave a fascinating lecture. | He's really good at cooking Italian food. |
| Register | Neutral | Neutral |
| How common | Top 1,000 (very common) | Top 5,000 (fairly common) |
| CEFR level | A2 | - |
| Part of speech | noun | |
| Collocations | real, leading, acknowledged, committee, panel, team, ask, consult, talk to, advise somebody/something, agree something, argue something, expert at, expert in, expert on | really good at, really good for, really good to see |
| Antonyms | novice, beginner, amateur | - |
| Common mistakes | Confusing 'expert' with 'experienced' — an expert knows a lot, while an experienced person has done something many times., Using 'expert' without specifying the field, which makes it vague., Incorrectly pronouncing it as 'ex-pert' instead of 'ek-spurt'. | Using 'good' instead of 'well' for skills (e.g., 'He plays good' instead of 'He plays well')., Overusing the phrase; it's better to specify the skill for clarity., Confusing 'good' with 'great' - they have different levels of emphasis. |
| Usage notes | Use 'expert' to describe someone's high skill or knowledge in a specific area. More suitable in formal contexts, but can also be used informally when discussing hobbies or practical skills. | Used to express strong approval of someone's abilities. Common in both spoken and written English. Can be informal in some contexts. |
See it in real clips
Frequently asked questions: Expert vs He's really good
What's the difference between Expert and He's really good?
Expert: A person who knows a lot about something. He's really good: He is very skilled or talented.
Which is more common: Expert and He's really good?
Expert is the most common in everyday English.
Can you show an example of each?
Expert: The expert in the field gave a fascinating lecture. He's really good: He's really good at cooking Italian food.
Can I use Expert and He's really good interchangeably?
Not always. Expert and He's really good 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.