Word

A word is a basic part of language that has meaning. It can be used alone and cannot be broken apart. Experts who study language, called linguists, do not all agree on one clear definition.

Words are made from smaller parts called morphemes. A morpheme is the smallest piece of language that has meaning, even if it cannot stand alone. Words are built from at least one morpheme. Morphemes can also be joined together to create new words. In English and many other languages, words usually have a main part called a root, like "rock" or "god," and sometimes added parts called affixes, like "-s" or "un-".

Words can also be made from joining more than one root, and these are called compound words. Examples include "typewriter" or "cowboy". Sometimes words are made by shrinking two words into one, like changing "cannot" into "can't". Words also come together to make bigger parts of language, such as phrases, clauses, and sentences.

For most languages that use writing, learning what a word is often happens when learning how to read and write. In English orthography, simple letter groups like "rock" or "the" are single words, while others like "rocks" or "ungodliness" are made from more than one morpheme. For the computer software, see Microsoft Word. For other uses, see Word (disambiguation).

Definitions

People have studied language for a long time and tried to decide what a word is. But there is no single definition that works for every language or situation.

A word is the smallest part of a language that has meaning and can stand alone. We can find words in different ways: by their sounds, by how they are written with spaces, by their meaning, or by their job in a sentence. Sometimes these ways match up, but not always. Some experts say it might be better to study parts of language that are easier to define clearly instead of using the word "word."

Word boundaries

Figuring out where one word ends and another begins can be hard. One way to find word boundaries is by listening for pauses when someone speaks slowly. But this isn’t always perfect, because people might pause in the middle of a word or not pause between words that sound close together.

Another method is to add extra words to a sentence and see where they fit. These extra words usually go at the edges of the original words. However, some languages have special rules that make this harder, like putting pieces of words inside others or splitting words apart. Some languages also have sound rules that can help spot word endings, like stressing certain parts of words or changing vowel sounds. But not all languages follow these rules perfectly.

We can also use writing cues like spaces and punctuation to tell words apart. But this doesn’t work the same in every language. For example, some languages like Chinese, Japanese, Thai, and Lao don’t always use spaces between words.

Morphology

Main article: Morphology (linguistics)

Morphology is the study of how words are formed and built. Words can change in two main ways: derivation and inflection. Derivation makes new words from old ones, often changing their meaning or type. For example, in English, the verb "to convert" can become the noun "a convert" or the adjective "convertible." Inflection adds grammar information, like tense or gender, to a word.

In some languages, one base word can have many forms and still be one word. These forms are created by adding small parts called morphemes to the base word.

Philosophy

Philosophers have thought about words since around the 5th century BC. Plato looked at words and wondered if the sounds were connected to their meanings, even though words can change. Later, John Locke said words help us share ideas, but we decide which sounds to use. Wittgenstein thought a word’s meaning comes from how we use it when we speak or write.

Classes

Main article: Lexical category

Words can be grouped into different classes based on how they work in sentences. Each language may have its own way of grouping words. For example, English has special words called articles, like the or a, which help us know if something is specific or not. But Japanese doesn’t have these; it uses context instead.

Some languages have unique ways of using words. In certain languages, all important words can act like verbs, while in others, they can act like nouns. The idea of grouping words into classes started a long time ago with ancient teachers who looked at how words worked in old languages. Over time, more types of word classes were added as people studied different languages.

History

Long ago, people studied words as the basic building blocks of language. They looked at different forms of a word but did not break them into smaller parts. At that time, words were seen as whole units, not made of smaller pieces. A word was thought to be the smallest part of a sentence that could express a full idea.