Cool MateFundamental vs That's the key for him
When to use each in English, with meaning, register, and examples.
Fundamental
Top 2,000 (common)B2adjective
That's the key for him
Top 5,000 (fairly common)
Most common: Fundamental
| Fundamental | That's the key for him | |
|---|---|---|
| Pronunciation | 🇬🇧 /["/ˌfʌndəˈmentl/"]/🇺🇸 /["/ˌfʌndəˈmentl/"]/ | 🇬🇧 //ðæts ðə kiː fɔː hɪm//🇺🇸 //ðæts ðə kiː fɔr hɪm// |
| Meaning | Basic or essential part of something | It's important for him. |
| Example | Understanding basic math concepts is fundamental to succeeding in higher-level mathematics. | That's the key for him to succeed in his career. |
| Register | Neutral | Neutral |
| How common | Top 2,000 (common) | Top 5,000 (fairly common) |
| CEFR level | B2 | - |
| Part of speech | adjective | |
| Collocations | be, seem, remain, really, truly, very, to, for, be, seem, remain, really, truly, very, to, for | key to success, key factor, key element, key issue, key player |
| Antonyms | superficial, secondary, minor | - |
| Common mistakes | Confused with 'foundational' — these can be similar but are used differently., Using 'fundamental' as a noun, which is incorrect as it is primarily an adjective., Overusing it in informal contexts, where simpler words like 'basic' might fit better. | Confused with 'that's key for him' without 'the', Using 'the key to him' inaccurately, 'Key' misused as a physical object instead of meaning important |
| Usage notes | Use in contexts where you're discussing core concepts or basics. It's suitable for both written and spoken language, but may seem overly formal in casual conversations. | Commonly used to indicate something vital to a person's success or understanding. Usually informal in speech, but can be used in writing. |
See it in real clips
Frequently asked questions: Fundamental vs That's the key for him
What's the difference between Fundamental and That's the key for him?
Fundamental: Basic or essential part of something That's the key for him: It's important for him.
Which is more common: Fundamental and That's the key for him?
Fundamental is the most common in everyday English.
Can you show an example of each?
Fundamental: Understanding basic math concepts is fundamental to succeeding in higher-level mathematics. That's the key for him: That's the key for him to succeed in his career.
Can I use Fundamental and That's the key for him interchangeably?
Not always. Fundamental and That's the key for him 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.