Introduction
Many English learners feel unsure about whether to use “comprise” or “constitute.” These two verbs are similar in meaning and often appear in academic, business, and formal writing. However, they are not used in exactly the same way. Choosing the wrong one can make a sentence sound unnatural or grammatically incorrect.
Understanding the difference between “comprise” and “constitute” will help you write more clearly and confidently. In this guide, we will explain what each word means, how to use them correctly, common mistakes to avoid, and provide practical examples you can follow.
What Does “Comprise” Mean?
The verb “comprise” means to include or consist of. It describes the whole and then mentions its parts.
Structure of “Comprise”
The basic structure is:
The whole + comprises + the parts.
Importantly, “comprise” is usually not followed by “of” in standard formal English.
Examples of “Comprise”
- The committee comprises five members.
- The book comprises ten chapters.
- The United Kingdom comprises England, Scotland, Wales, and Northern Ireland.
- The course comprises lectures, discussions, and final exams.
In each example, the subject is the complete whole, and what follows are its individual parts.
Common Mistake: “Comprise of”
Many people say:
❌ The team is comprised of five players.
In formal writing, this is often considered incorrect. Instead, write:
✅ The team comprises five players.
✅ The team is composed of five players.
While “is comprised of” is becoming more common in everyday English, careful writers usually avoid it.
What Does “Constitute” Mean?
The verb “constitute” means to form, make up, or be part of a whole. Unlike “comprise,” it often focuses on the parts that create the whole.
Structure of “Constitute”
The basic structure is:
The parts + constitute + the whole.
Examples of “Constitute”
- Five members constitute the committee.
- Ten chapters constitute the book.
- Women constitute 60% of the workforce.
- These actions constitute a violation of the rules.
Notice that the subject often refers to individual parts or elements that form something larger.
Main Difference Between “Comprise” and “Constitute”
The key difference is about perspective:
- Comprise starts with the whole and lists its parts.
- Constitute often starts with the parts and shows how they form the whole.
Side-by-Side Comparison
| Feature | Comprise | Constitute |
|---|---|---|
| Basic Meaning | To include; to consist of | To form; to make up |
| Focus | The whole | The parts (often) |
| Common Structure | The whole comprises the parts | The parts constitute the whole |
| Example | The class comprises 20 students. | Twenty students constitute the class. |
| Used with “of”? | No (in formal English) | No |
More Practical Examples
Example 1: Business Context
The board comprises eight directors.
Eight directors constitute the board.
Example 2: Education
The program comprises three main modules.
Three main modules constitute the program.
Example 3: Statistics
International students comprise 30% of the university population.
International students constitute 30% of the university population.
In percentage sentences, both verbs are often possible, but “constitute” is more common in formal reports.
Example 4: Legal or Formal Situations
These findings constitute strong evidence.
Such behavior constitutes a breach of contract.
Here, “constitute” means “to be equal to” or “to be considered as.” “Comprise” cannot be used in this way.
When You Cannot Replace One with the Other
Although the two words are similar, they are not always interchangeable.
1. Meaning “to be equal to”
Drunk driving constitutes a serious crime.
You cannot say:
❌ Drunk driving comprises a serious crime.
2. Passive Structures
“Constitute” is rarely used in passive voice. “Comprise” in passive form (“is comprised of”) is controversial in formal writing.
Quick Summary: Key Takeaways
- Use “comprise” when the subject is the whole.
- Use “constitute” when the subject is the parts (or when meaning “to form” or “to be equal to”).
- Avoid “comprise of” in formal writing.
- Both verbs are common in academic, business, and formal English.
- “Constitute” is often more flexible in meaning.
Simple Memory Trick
Think of it this way:
The whole comprises the parts.
The parts constitute the whole.
If you remember this sentence pattern, you will avoid most mistakes.
Conclusion
So, is it correct to say “comprise” or “constitute”? The answer is: both are correct, but they are used differently. “Comprise” focuses on what a whole includes, while “constitute” often focuses on how parts form a whole — and it can also mean “to be considered as.”
By understanding the structure and perspective of each word, you can choose the right one with confidence. With practice, the difference will become natural, and your writing will sound clearer and more professional.