Investigate vs Research

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

Investigate

Top 2,000 (common)B1verb

Research

Top 1,000 (very common)A2noun
Most common: Research
 InvestigateResearch
Pronunciation🇬🇧 /["/ɪnˈvestɪɡeɪt/","/ɪnˈvestɪɡeɪts/","/ɪnˈvestɪɡeɪtɪd/","/ɪnˈvestɪɡeɪtɪŋ/"]/🇺🇸 /["/ɪnˈvestɪɡeɪt/","/ɪnˈvestɪɡeɪts/","/ɪnˈvestɪɡeɪtɪd/","/ɪnˈvestɪɡeɪtɪŋ/"]/🇬🇧 /["/rɪˈsɜːtʃ//ˈriːsɜːtʃ/"]/🇺🇸 /["/ˈriːsɜːrtʃ//rɪˈsɜːrtʃ/"]/
MeaningTo look into something closely to find out more information.The act of studying something carefully to learn more about it.
ExampleThe police will investigate the crime scene for new evidence.The research on climate change is very important for our future.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 1,000 (very common)
CEFR levelB1A2
Part of speechverbnoun
Collocationscarefully, closely, in detail, ask somebody to, be called in to, decide to, for, carefully, closely, in detail, ask somebody to, be called in to, decide to, forcareful, detailed, in-depth, piece, carry out, conduct, do, demonstrate something, find something, identify something, degree, effort, programme/​program, research in, research into, research on, an area of research, focus your research on something, somebody’s own research
Antonymsignore, overlook, disregardignorance, inactivity
Common mistakesConfusing with 'invest' which relates to money or resources., Using as an intransitive verb; it requires an object (e.g., 'investigate the issue')., Mixing up with synonyms like 'examine' without understanding the context.Using 'research' as an uncountable noun instead of a countable noun (e.g., saying 'a research' instead of 'a piece of research'), Confusing 'research' with 'search' (research is more in-depth and analytical), Using 'research' inappropriately in non-academic contexts
Usage notesCommonly used in formal contexts, especially in journalism, research, or law enforcement. It may not be seen as appropriate in casual conversations.Used in academic and professional contexts. Avoid using 'research' as a verb in casual conversation; instead, use 'study' or 'look into'.

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Investigate

Frequently asked questions: Investigate vs Research

What's the difference between Investigate and Research?

Investigate: To look into something closely to find out more information. Research: The act of studying something carefully to learn more about it.

Which is more common: Investigate and Research?

Research is the most common in everyday English.

Which is more advanced: Investigate and Research?

Investigate is the highest level, at B1, on the CEFR scale.

Are Investigate and Research the same CEFR level?

Investigate: B1, Research: A2 on the CEFR scale.

What part of speech are Investigate and Research?

Investigate: verb, Research: noun.

Can you show an example of each?

Investigate: The police will investigate the crime scene for new evidence. Research: The research on climate change is very important for our future.

Can I use Investigate and Research interchangeably?

Not always. Investigate and Research 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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