Cool MateSolution vs Why isn't the serum working
When to use each in English, with meaning, register, and examples.
Solution
Top 1,000 (very common)A2noun
Why isn't the serum working
Top 2,000 (common)
Most common: Solution
| Solution | Why isn't the serum working | |
|---|---|---|
| Pronunciation | 🇬🇧 /["/səˈluːʃn/"]/🇺🇸 /["/səˈluːʃn/"]/ | 🇬🇧 //waɪ ˈɪzənt ðə ˈsɪərəm ˈwɜːkɪŋ//🇺🇸 //waɪ ˈɪzənt ðə ˈsɪrəm ˈwɜrkɪŋ// |
| Meaning | An answer or way to solve a problem. | A special liquid used to treat or protect against disease might not be effective. |
| Example | The solution to the math problem was easier than I expected. | Why isn't the serum working as expected in the clinical trials? |
| Register | Neutral | Neutral |
| How common | Top 1,000 (very common) | Top 2,000 (common) |
| CEFR level | A2 | - |
| Part of speech | noun | |
| Collocations | complete, comprehensive, partial, look for, seek, work towards/toward, solution for, solution to, part of the solution, concentrated, strong, dilute, contain, in solution | antivenom serum, novel serum, therapeutic serum, experimental serum, plasma serum |
| Antonyms | problem, issue, complication | - |
| Common mistakes | Confused with 'resolution' which can mean a firm decision., Using 'solution' as a verb instead of a noun., Mistaking 'solution' for something that is only mathematical. | Confusing 'serum' with 'vaccine' which are not the same., Using 'isn't' in overly formal settings; prefer 'is not' instead., Overlooking plural forms; 'serum' is singular, 'serums' is the plural. |
| Usage notes | Use 'solution' in both formal and informal contexts when discussing problems and their answers. Avoid using it in slang or overly casual conversations. | Use in medical or scientific contexts. Appropriate for discussions about treatments or vaccinations. |
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Frequently asked questions: Solution vs Why isn't the serum working
What's the difference between Solution and Why isn't the serum working?
Solution: An answer or way to solve a problem. Why isn't the serum working: A special liquid used to treat or protect against disease might not be effective.
Which is more common: Solution and Why isn't the serum working?
Solution is the most common in everyday English.
Can you show an example of each?
Solution: The solution to the math problem was easier than I expected. Why isn't the serum working: Why isn't the serum working as expected in the clinical trials?
Can I use Solution and Why isn't the serum working interchangeably?
Not always. Solution and Why isn't the serum working 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.