Check vs Run diagnostics

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

Check

Top 1,000 (very common)A1verb

Run diagnostics

FormalBeyond 10,000 (less common)
Most formal: Run diagnosticsMost common: Check
 CheckRun diagnostics
Pronunciation🇬🇧 /["/tʃek/","/tʃeks/","/tʃekt/","/ˈtʃekɪŋ/"]/🇺🇸 /["/tʃek/","/tʃeks/","/tʃekt/","/ˈtʃekɪŋ/"]/🇬🇧 //rʌn daɪəɡˈnɒstɪks//🇺🇸 //rʌn daɪəɡˈnɑːstɪks//
MeaningTo look at something to see if it's correct or okay.Check how something is working.
ExamplePlease check your answers before submitting the test.The team decided to run diagnostics on the server after noticing slow performance.
RegisterNeutralFormal
How commonTop 1,000 (very common)Beyond 10,000 (less common)
CEFR levelA1-
Part of speechverb
Collocationsalways, daily, periodically, had better, must, need to, against, for, with, be worth checking, check to see if, check to see whether, always, daily, periodically, had better, must, need to, against, for, with, be worth checking, check to see if, check to see whether, simply, mentally, offrun diagnostics tests, run diagnostics procedure, run diagnostics program
Antonymsignore, disregard-
Common mistakesConfused with 'cheque' in British English., Using 'check' as a noun without proper context., Incorrectly conjugating 'check' in the past tense.Confused with 'run a marathon' - different context., Omitting 'diagnostics' and saying just 'run' is unclear.
Usage notesUsed in various contexts such as checking information, verifying facts, or inspecting items. Avoid using in very formal writing; instead, opt for 'verify' or 'inspect.'Used in technical and medical contexts. Avoid in casual conversations.

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Check
Run diagnostics

Frequently asked questions: Check vs Run diagnostics

What's the difference between Check and Run diagnostics?

Check: To look at something to see if it's correct or okay. Run diagnostics: Check how something is working.

Which is more formal: Check and Run diagnostics?

Run diagnostics is the most formal of these.

Which is more common: Check and Run diagnostics?

Check is the most common in everyday English.

Can you show an example of each?

Check: Please check your answers before submitting the test. Run diagnostics: The team decided to run diagnostics on the server after noticing slow performance.

Can I use Check and Run diagnostics interchangeably?

Not always. Check and Run diagnostics 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.

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