concept
/ˈkɒn.sɛpt/An abstract idea or general understanding of something. A concept is usually more developed and structured than a simple idea. It is often used in academic, scientific, or professional discussions.
- The concept of justice means different things in different cultures.
- She struggled to grasp the concept of compound interest.
- The teacher introduced the concept using a simple diagram.
Adinary Nuance
Concept sits in a cluster of near-neighbors — idea, notion, and theory — but each carries a different weight. An idea is the everyday, general term: it can be a passing thought or a grand plan. A notion is even lighter and vaguer ("I had a notion it might rain"), suggesting something not fully formed. Concept, by contrast, implies a structured, well-defined understanding — something you can study, teach, or build on. Theory goes one step further than concept: a theory is a concept that has been tested, argued, or systematically developed. In IELTS and academic writing, concept is almost always the right word when you want to sound precise and formal — writers who use idea or notion in those contexts can sound less authoritative.
In other languages
- Vietnamese
- Khái niệm
- Spanish
- Concepto
- Chinese
- 概念
- Japanese
- 概念
- Korean
- 개념
Etymology
From Latin "conceptum," the past participle of "concipere" meaning "to conceive" or "to take in." The word entered English in the late 16th century, carrying the sense of something mentally formed or understood.
Common phrases
Synonyms
Related words
Frequently asked questions
- What is the difference between 'concept' and 'idea'?
- 'Idea' is the common, everyday word for any thought or plan. 'Concept' is more formal and implies a structured, well-defined understanding — the kind you would discuss in an essay or academic setting. For IELTS writing, 'concept' usually sounds more appropriate than 'idea'.
- Is 'concept' a formal or informal word?
- 'Concept' leans formal. It is very common in academic texts, IELTS essays, and professional reports. In casual speech, people are more likely to say 'idea' or 'notion' instead.
- How do I use 'concept' correctly in IELTS Task 2?
- Use 'concept' when introducing an abstract topic — for example, 'the concept of equality' or 'the concept of sustainable development.' It signals to the examiner that you are thinking analytically. Pair it with verbs like 'grasp,' 'explore,' 'apply,' or 'challenge' for stronger sentences.
- What is the difference between 'concept' and 'theory'?
- A 'concept' is a general, abstract idea or understanding. A 'theory' is more developed — it involves evidence, reasoning, and systematic explanation. You might say a theory is built on top of one or more concepts.