Injection vs Why isn't the serum working

When to use each in English, with meaning, register, and examples.

Injection

Top 2,000 (common)C1noun

Why isn't the serum working

Top 2,000 (common)
 InjectionWhy isn't the serum working
Pronunciation🇬🇧 /["/ɪnˈdʒekʃn/"]/🇺🇸 /["/ɪnˈdʒekʃn/"]/🇬🇧 //waɪ ˈɪzənt ðə ˈsɪərəm ˈwɜːkɪŋ//🇺🇸 //waɪ ˈɪzənt ðə ˈsɪrəm ˈwɜrkɪŋ//
MeaningA way to put a substance into something, usually with a needle.A special liquid used to treat or protect against disease might not be effective.
ExampleThe nurse gave me an injection to help relieve the pain.Why isn't the serum working as expected in the clinical trials?
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)
CEFR levelC1-
Part of speechnoun
Collocationsintramuscular, intravenous, painkilling, have, administer, give somebody, by injection, injection against, injection for, massive, substantial, much-needed, need, require, give something, injection from, injection into, an injection of capital, cash, resources, etc.antivenom serum, novel serum, therapeutic serum, experimental serum, plasma serum
Antonymsremoval, extraction-
Common mistakesConfusing with 'injection' as an action instead of a noun, Using 'inject' incorrectly as a noun in place of 'injection', Mispronouncing the word, especially the 'j' soundConfusing '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 notesOften used in medical contexts, such as vaccinations. Avoid using in casual conversations unless discussing health.Use in medical or scientific contexts. Appropriate for discussions about treatments or vaccinations.

See it in real clips

Why isn't the serum working

Frequently asked questions: Injection vs Why isn't the serum working

What's the difference between Injection and Why isn't the serum working?

Injection: A way to put a substance into something, usually with a needle. Why isn't the serum working: A special liquid used to treat or protect against disease might not be effective.

Can you show an example of each?

Injection: The nurse gave me an injection to help relieve the pain. Why isn't the serum working: Why isn't the serum working as expected in the clinical trials?

Can I use Injection and Why isn't the serum working interchangeably?

Not always. Injection 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.

Related comparisons