TOEIC Part 5: Word Forms Noun Rule, Examples, and 20 Practice Questions

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Understanding Noun Word Forms in TOEIC Part 5

The TOEIC Listening and Reading Test (updated in 2026) includes Part 5, which tests grammar and vocabulary. Noun word forms are a common question type where you must select the correct noun from four options to complete a sentence. ETS reports that 15-20% of Part 5 questions involve word forms.

Key Rules for Noun Word Forms

1. Suffixes: Common noun suffixes include -tion (e.g., information), -ment (e.g., development), -ness (e.g., happiness), and -ity (e.g., diversity).
2. Irregular Nouns: Some nouns do not follow standard rules (e.g., child, mouse, ox).
3. Derivation: Nouns can be derived from verbs (e.g., decide → decision) or adjectives (e.g., happy → happiness).
4. Plurals: Some nouns have irregular plurals (e.g., child → children, mouse → mice).

Model Answers at Different Score Levels

Prompt: The company's recent ______ has led to a significant increase in profits.

| Score Level | Model Answer | Scoring Breakdown | |------------|--------------|------------------| | 6.0 (180-220) | The company's recent develop has led to a significant increase in profits. | - Task Response: Incorrect word form (needs -ment suffix). - Coherence and Cohesion: Sentence structure is clear but answer is wrong. - Lexical Resource: Limited range of vocabulary. - Grammatical Range and Accuracy: Basic grammar with errors. | | 7.0 (225-270) | The company's recent development has led to a significant increase in profits. | - Task Response: Correct noun form. - Coherence and Cohesion: Logical and fluent. - Lexical Resource: Adequate vocabulary range. - Grammatical Range and Accuracy: Few errors. | | 8.0 (275-300) | The company's recent expansion has led to a significant increase in profits. | - Task Response: Correct and precise noun form. - Coherence and Cohesion: Clear and cohesive. - Lexical Resource: Varied and appropriate vocabulary. - Grammatical Range and Accuracy: Sophisticated structures with minimal errors. | | 9.0 (305-310) | The company's recent strategic expansion has led to a significant increase in profits. | - Task Response: Correct and nuanced noun form. - Coherence and Cohesion: Excellent flow and coherence. - Lexical Resource: Advanced and precise vocabulary. - Grammatical Range and Accuracy: Complex structures with no errors. |

20 Practice Questions for Noun Word Forms

1. The ______ of the project is scheduled for next month. (completion)
2. Her ______ for the job was impressive. (qualification)
3. The ______ of the new policy has caused controversy. (implementation)
4. The ______ between the two countries has improved. (relation)
5. The ______ of the book was a great success. (publication)
6. His ______ to the team is invaluable. (contribution)
7. The ______ of the data is essential for analysis. (collection)
8. The ______ of the event was unprecedented. (success)
9. The ______ of the new software is user-friendly. (interface)
10. The ______ of the company's growth is remarkable. (rate)
11. The ______ of the project was completed on time. (implementation)
12. The ______ of the new product is expected to be high. (demand)
13. The ______ of the meeting was productive. (discussion)
14. The ______ of the company's success is its innovative approach. (secret)
15. The ______ of the new law has been delayed. (enforcement)
16. The ______ of the project was completed within budget. (completion)
17. The ______ of the new technology is revolutionary. (impact)
18. The ______ of the company's profits has increased. (margin)
19. The ______ of the new policy is still under review. (evaluation)
20. The ______ of the project was a team effort. (success)

Vocabulary Highlights

| Word | Definition | Example Collocation | |------|-----------|--------------------| | Development | The process of growth or advancement. | Economic development, personal development | | Qualification | A degree, diploma, or other evidence of competence. | Professional qualification, educational qualification | | Implementation | The process of putting a plan into effect. | Policy implementation, project implementation | | Relation | The way in which two or more things are connected. | International relations, family relations | | Publication | The act of issuing copies of a work to the public. | Book publication, journal publication | | Contribution | Something that is given in order to help achieve a result. | Financial contribution, community contribution | | Collection | The act of gathering things together. | Data collection, art collection | | Success | The achievement of something desired, planned, or attempted. | Business success, academic success | | Interface | A point where two systems meet and interact. | User interface, software interface | | Rate | A measure, quantity, or frequency, typically per unit. | Growth rate, interest rate | | Demand | A requirement or need for something. | Market demand, consumer demand |

Common Mistakes Students Make

1. Ignoring Suffixes: Failing to recognize common noun suffixes like -tion, -ment, -ness, and -ity.
2. Confusing Verb and Noun Forms: Selecting the verb form instead of the noun form (e.g., decide instead of decision).
3. Overlooking Irregular Nouns: Missing irregular nouns that do not follow standard patterns (e.g., child instead of children).
4. Incorrect Plural Forms: Using the wrong plural form for nouns (e.g., mouses instead of mice).
5. Lack of Vocabulary Range: Relying on basic vocabulary instead of using a wider range of advanced nouns.

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