Compound Words; Morphology

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Words are the building blocks of language. But have you ever thought about how these words are formed?

In this lesson, we’ll go deeper into morphology and compound words. You already know that morphology is about how words are formed using smaller units called morphemes.

Now, we’ll explore more complex forms of word formation and compound structures that improve your vocabulary and grammar. Get ready to level up your word power!

Morphology (Word Structure)

Definition Recap:
Morphology is the study of how words are formed from the smallest units of meaning called morphemes.

Types of Morphemes (Review):

Morpheme Type	Meaning	Example
Free Morpheme	Can stand alone	play, help
Bound Morpheme	Cannot stand alone	-ing, re-, -ful

Complex Word Formation Processes:

• Compounding (e.g., news + paper = newspaper)
• Derivation (e.g., joy → joyful → joyfulness)
• Inflection (e.g., talk → talked, cat → cats)

Compound Words (Extension)

Compound words are formed when two or more words are combined to express a new idea or meaning.

Types of Compound Words (Expanded):

Type	Structure	Examples
Closed	Written as one word	birthday, classmate
Hyphenated	Joined with a hyphen	runner-up, mother-in-law
Open	Written separately	ice cream, real estate

Compound Word Forms:

Form	Example
Compound Noun	handbag, fireman
Compound Adjective	well-dressed, old-fashioned
Compound Verb	babysit, highlight

Spelling Tip:
Some compound words evolve over time. For example, “e-mail” is now commonly written as “email”.

 

Class Activity

Break down the following into morphemes and identify whether each is a compound word or a derived word.

1. Unbelievable
2. Toothbrush
3. Rewriting
4. Father-in-law
5. Breakthrough

Expected Answers:

1. un + believe + able → Morphology (Derived)
2. tooth + brush → Compound
3. re + write + ing → Morphology (Derived)
4. father-in-law → Compound (Hyphenated)
5. break + through → Compound (Open)

Evaluation

1. Define morphology and compound words.
2. State two differences between derivation and compounding.
3. List and give two examples each of compound nouns, adjectives, and verbs.
4. Identify the morphemes in the word “unknowingly”.
5. Form new compound words using the words: “home”, “work”, and “water”.

In summary, language is powerful when you understand how words are formed. Morphology helps you discover the hidden structure of words, while compound words show how combining simple words can give us richer meanings. This knowledge helps you write and speak more accurately and confidently. Don’t just memorise—apply what you’ve learned whenever you read, write, or speak.