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Types of Sentences

Basic English grammar website with articles on types of sentences, parts of speech, punctuation rules, gerunds, connectives, clauses, and phrases with examples.

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You are here: Home / Education / English Grammar / What is a Word? – Building Blocks of English

What is a Word? – Building Blocks of English

posted on October 6, 2025

A word is a single unit of language that has meaning. Words are created by combining letters in a specific order to form the building blocks of sentences.

How Words Are Made

Words are formed by putting letters together in the correct sequence. The order matters!

Examples:

  • C + A + T = cat ✓ (correct word)
  • T + A + C = tac ✗ (not a word)
  • D + O + G = dog ✓ (correct word)
  • B + O + O + K = book ✓ (correct word)

Three Main Types of Words

1. Naming Words (Nouns)

These words name people, places, things, or ideas. Learn more in our complete nouns guide.

Examples:

  • book – a thing you read
  • dog – an animal
  • John – a person’s name
  • London – a place

2. Action Words (Verbs)

These words show what someone or something does. Explore more in our verbs lesson.

Examples:

  • run – to move quickly on foot
  • eat – to consume food
  • sleep – to rest
  • write – to form letters and words

3. Describing Words (Adjectives)

These words describe nouns and tell us more about them. See our adjectives guide for details.

Examples:

  • big – large in size
  • beautiful – pleasing to look at
  • red – a color
  • happy – feeling joy

Other Important Word Types

English has eight parts of speech in total:

  • Nouns – naming words
  • Pronouns – replacement words (I, you, he, she)
  • Verbs – action words
  • Adjectives – describing words
  • Adverbs – how/when/where words
  • Prepositions – position words (in, on, at)
  • Conjunctions – connecting words (and, but, or)
  • Interjections – emotion words (Wow! Oh!)

Every Word Has Meaning

The purpose of words is to communicate ideas. When we combine words correctly, we create sentences that express complete thoughts.

Example:

  • Dog = a four-legged animal that barks
  • Run = to move quickly on foot
  • The dog runs. = A complete sentence with meaning

Practice Exercise

Identify the type of word (Naming/Action/Describing):

  1. apple – ?
  2. jump – ?
  3. small – ?
  4. teacher – ?

Key Takeaways

  • Words are made from letters in specific order
  • Every word has meaning
  • Three main types: naming, action, describing
  • Letter order matters (cat vs. tac)
  • Words combine to form sentences

Next: Learn how to combine words into complete sentences.

Related Lessons:

  • The English Alphabet
  • Nouns – Naming Words
  • Verbs – Action Words

Filed Under: English Grammar

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