Cool MateCrucial vs That's important
When to use each in English, with meaning, register, and examples.
Crucial
Top 1,000 (very common)B2adjective
That's important
Top 3,000 (common)
Most common: Crucial
| Crucial | That's important | |
|---|---|---|
| Pronunciation | 🇬🇧 /["/ˈkruːʃl/"]/🇺🇸 /["/ˈkruːʃl/"]/ | 🇬🇧 //ðæts ɪmˈpɔːtənt//🇺🇸 //ðæts ɪmˈpɔrtənt// |
| Meaning | very important | This matters a lot. |
| Example | It is crucial to finish your homework before the deadline. | It's crucial to remember that **that's important** in our discussion. |
| Register | Neutral | Neutral |
| How common | Top 1,000 (very common) | Top 3,000 (common) |
| CEFR level | B2 | - |
| Part of speech | adjective | |
| Collocations | be, prove, seem, really, very, absolutely, for, to | that's crucial, that's significant, that's essential, that's vital, that's necessary |
| Antonyms | unimportant, trivial, insignificant | - |
| Common mistakes | Using 'crucial' in place of 'critical' in all contexts., Saying 'crucial for to' instead of just 'crucial for'., Confusing 'crucial' with 'crucifix'. | Using it in overly formal contexts., Confusing 'that's important' with 'that's necessary', which may imply obligation. |
| Usage notes | Use 'crucial' for situations that are significantly important, especially in formal contexts. Avoid using it in casual conversations where simpler words like 'important' might fit better. | Use when emphasizing the significance of something. Appropriate in both casual and serious conversations. |
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Frequently asked questions: Crucial vs That's important
What's the difference between Crucial and That's important?
Crucial: very important That's important: This matters a lot.
Which is more common: Crucial and That's important?
Crucial is the most common in everyday English.
Can you show an example of each?
Crucial: It is crucial to finish your homework before the deadline. That's important: It's crucial to remember that **that's important** in our discussion.
Can I use Crucial and That's important interchangeably?
Not always. Crucial and That's important 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.