Investigation vs Probe

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

Investigation

Top 2,000 (common)B2noun

Probe

Top 2,000 (common)C1noun
 InvestigationProbe
Pronunciation🇬🇧 /["/ɪnˌvestɪˈɡeɪʃn/"]/🇺🇸 /["/ɪnˌvestɪˈɡeɪʃn/"]/🇬🇧 //prəʊb//🇺🇸 //proʊb//
MeaningLooking into something to find out more about it.A tool to investigate or explore something deeply.
ExampleThe police launched an investigation into the missing person's case.The scientists sent a probe to study the surface of Mars.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)
CEFR levelB2C1
Part of speechnounnoun
Collocationscareful, close, detailed, carry out, conduct, pursue, demonstrate something, reveal something, show something, on investigation, under investigation, investigation into, the subject of an investigation, careful, close, detailed, carry out, conduct, pursue, demonstrate something, reveal something, show something, on investigation, under investigation, investigation into, the subject of an investigationspace probe, medical probe, investigative probe, deep probe
Antonymsdisregard, neglect, overlookignore, avoid
Common mistakesConfused with 'invest' which means to put money into something., Using 'investigation' as a verb instead of a noun., Mixing up 'investigation' with 'inspector', which refers to a person.Confused with 'probe' as a verb instead of a noun., Used too generically; may not be appropriate in informal contexts.
Usage notesUse 'investigation' in formal contexts, like police work or research. Avoid in casual conversations.Used in scientific and technical contexts, as well as metaphorically in discussions about examining issues. Not commonly used in casual conversation.

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Investigation
Probe

Frequently asked questions: Investigation vs Probe

What's the difference between Investigation and Probe?

Investigation: Looking into something to find out more about it. Probe: A tool to investigate or explore something deeply.

Which is more advanced: Investigation and Probe?

Probe is the highest level, at C1, on the CEFR scale.

Are Investigation and Probe the same CEFR level?

Investigation: B2, Probe: C1 on the CEFR scale.

What part of speech are Investigation and Probe?

Investigation: noun, Probe: noun.

Can you show an example of each?

Investigation: The police launched an investigation into the missing person's case. Probe: The scientists sent a probe to study the surface of Mars.

Can I use Investigation and Probe interchangeably?

Not always. Investigation and Probe 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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