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Vocabulary

language culture Maturity 11-13 Next article →

A vocabulary is a collection of words used in a language. People also call this a lexicon. It is a very important part of how we talk and share ideas. We use words to show our feelings and give information to others.

Vocabulary can be spoken, written, or even signed with hands. It includes single words and also groups of words called idioms or collocations. Having a large vocabulary helps people understand what they read much better. It is also a key part of learning a new language.

There are two main ways we use the words we know. The first is called active vocabulary, or productive vocabulary. These are the words you use regularly when you speak or write. The second type is passive vocabulary, or receptive vocabulary. These are words you recognize when you hear or read them. Usually, a person's passive vocabulary is much larger than their active one.

A young child might understand many words before they can even speak. Their active vocabulary is zero, but their receptive vocabulary is growing.

Learning words happens in many different ways throughout your life. You might learn through direct teaching at a school. You can also learn by reading books or playing word games. Listening to people talk helps you pick up new sounds. Even natural exposure to a language helps your brain grow.

However, a vocabulary can sometimes shrink. This might happen because of forgetting, disease, or trauma. People also study vocabulary in subjects like psychology and artificial intelligence. They want to see how the brain processes these symbols.

Scientists use different ways to count how many words a person knows. One way is to count lemmas, which are the basic dictionary forms of words. For example, "walk" is a lemma, but "walked" is not. Another way is to count word families. A word family includes all words made from one base, like "effort" and "effortless."

Estimates of vocabulary size can range from 10,000 to 200,000 words. This depends on which definition a researcher chooses to use. A 2016 study looked at 20-year-old English speakers. It found they know about 42,000 lemmas on average.

Your vocabulary changes as you move through different stages of life. In first grade, children who read know twice as many words as those who do not. By age five or six, an English-speaking child may know about 1,500 words. As adults, the growth continues steadily. Between the ages of 20 and 60, people learn about 6,000 more lemmas. This is like learning one new word every other day.

Vocabulary is a tool that helps us explain our lives and our hopes.

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