Intellect vs Intelligence vs Mind vs Reason

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

Intellect

Top 5,000 (fairly common)B1

Intelligence

Top 1,000 (very common)B1noun

Mind

Top 1,000 (very common)A2noun

Reason

Top 1,000 (very common)A1noun
 IntellectIntelligenceMindReason
Pronunciation🇬🇧 //ɪnˈtɛlɛkt//🇺🇸 //ˈɪntəˌlɛkt//🇬🇧 /["/ɪnˈtelɪdʒəns/"]/🇺🇸 /["/ɪnˈtelɪdʒəns/"]/🇬🇧 /["/maɪnd/"]/🇺🇸 /["/maɪnd/"]/🇬🇧 /["/ˈriːzn/"]/🇺🇸 /["/ˈriːzn/"]/
MeaningThe ability to think and understand things.The ability to think, learn, and understand.The part of you that thinks and feels.An explanation or cause for something.
ExampleHer intellect is evident in her ability to solve complex problems.Her intelligence in solving complex problems is impressive.She has a brilliant mind for mathematics.The reason I am late is because of traffic.
RegisterNeutralNeutralNeutralNeutral
How commonTop 5,000 (fairly common)Top 1,000 (very common)Top 1,000 (very common)Top 1,000 (very common)
CEFR levelB1B1A2A1
Part of speechnounnounnoun
Collocationssharp intellect, emotional intellect, intellectual discussionconsiderable, great, high, have, demonstrate, show, test, secret, good, reliable, collect, gather, get, agency, community, servicehuman, conscious, subconscious, come into, come to, cross, work, drift, stray, in your mind, in mind, on your mind, at the back of your mind, in the back of your mind, at the forefront of your mind, human, conscious, subconscious, come into, come to, cross, work, drift, stray, in your mind, in mind, on your mind, at the back of your mind, in the back of your mind, at the forefront of your mind, human, conscious, subconscious, come into, come to, cross, work, drift, stray, in your mind, in mind, on your mind, at the back of your mind, in the back of your mind, at the forefront of your mind, human, conscious, subconscious, come into, come to, cross, work, drift, stray, in your mind, in mind, on your mind, at the back of your mind, in the back of your mind, at the forefront of your mind, human, conscious, subconscious, come into, come to, cross, work, drift, stray, in your mind, in mind, on your mind, at the back of your mind, in the back of your mind, at the forefront of your mindcogent, good, sound, be aware of, see, have, by reason of, for a/​the reason, for reason of, all the more reason, all sorts of reasons, every reason, cogent, good, sound, be aware of, see, have, by reason of, for a/​the reason, for reason of, all the more reason, all sorts of reasons, every reason, human, lose, be open to, listen to, beyond reason, within reason, an appeal to reason, faculty of reason, sense of reason, human, lose, be open to, listen to, beyond reason, within reason, an appeal to reason, faculty of reason, sense of reason
Antonymsignorance, stupidityignorance, stupidityignorance, disregard, carelessnesscause, consequence
Common mistakesConfused with 'intelligent' — intellect refers to mental ability, not specifically intelligence., Using as a verb — 'intellect' is only a noun., Overusing in casual conversation — may sound pretentious.Often confused with 'intelligent' as a synonym., Misused as an adjective, though it is a noun., Sometimes incorrectly spelled as 'inteligence'.Confusing 'mind' with 'brain' - 'mind' refers to thoughts and feelings, while 'brain' is the physical organ., Using 'minded' when you mean 'mindful' - 'minded' refers to having a particular inclination., Saying 'mind give me a moment' instead of 'mind giving me a moment?'Confused with 'rationale' — 'reason' is broader., Using 'reason' without 'for' — remember to include it when explaining cause., Mispronouncing as 'ree-zen' instead of 'ree-zon'.
Usage notesUse in academic or professional contexts to discuss someone's cognitive abilities. Avoid in casual settings.Used in both formal and informal contexts. Can refer to academic intelligence or general cleverness. Avoid using it in overly casual conversations.Used in various contexts, such as 'Mind your manners' (casual) or 'To have something in mind' (neutral). Avoid using 'mind' in overly formal situations.Used in both formal and informal contexts. In formal writing, it often appears in discussions and academic papers. In conversational settings, it's common to ask for someone's reason behind their choices.

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Intelligence
Mind
Reason

Frequently asked questions: Intellect vs Intelligence vs Mind vs Reason

What's the difference between Intellect, Intelligence, Mind, and Reason?

Intellect: The ability to think and understand things. Intelligence: The ability to think, learn, and understand. Mind: The part of you that thinks and feels. Reason: An explanation or cause for something.

Are Intellect, Intelligence, Mind, and Reason the same CEFR level?

Intellect: B1, Intelligence: B1, Mind: A2, Reason: A1 on the CEFR scale.

Can you show an example of each?

Intellect: Her intellect is evident in her ability to solve complex problems. Intelligence: Her intelligence in solving complex problems is impressive. Mind: She has a brilliant mind for mathematics. Reason: The reason I am late is because of traffic.

Can I use Intellect, Intelligence, Mind, and Reason interchangeably?

Not always. Intellect, Intelligence, Mind, and Reason 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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