Cool MateAgent vs Catalyst
When to use each in English, with meaning, register, and examples.
Agent
Top 1,000 (very common)B1noun
Catalyst
Top 3,000 (common)
Most common: Agent
| Agent | Catalyst | |
|---|---|---|
| Pronunciation | 🇬🇧 /["/ˈeɪdʒənt/"]/🇺🇸 /["/ˈeɪdʒənt/"]/ | 🇬🇧 //ˈkæt.əl.ɪst//🇺🇸 //ˈkæt.əl.ɪst// |
| Meaning | A person or thing that does something for another person or thing. | Something that helps a change happen faster. |
| Example | The secret agent infiltrated the enemy's facility. | The enzyme acts as a **catalyst** for the biological reaction. |
| Register | Neutral | Neutral |
| How common | Top 1,000 (very common) | Top 3,000 (common) |
| CEFR level | B1 | - |
| Part of speech | noun | |
| Collocations | booking, ticket, travel, employ, have, use, through an agent, agent for, booking, ticket, travel, employ, have, use, through an agent, agent for, intelligence, enemy, foreign, chief, main, primary, agent for, an agent for change, an agent of change | serve as a catalyst, act as a catalyst, catalyst for change, catalyst in a reaction, catalyst for innovation |
| Antonyms | client, customer | - |
| Common mistakes | Confused with 'agency' — 'agent' refers to the person, while 'agency' refers to the organization., Using 'agent' for a person without a specific role, which makes it unclear., Mixing up meanings in different contexts, like an 'agent' in real estate versus a 'secret agent'. | Confused with 'catalyze' which is the action of causing a reaction., Using it in negative contexts where change is not involved., Assuming it applies only in chemistry. |
| Usage notes | Often used in business or formal contexts. Not typically used in casual conversation to describe people outside their role. In legal terms, it refers to someone authorized to act on behalf of another. | Used in scientific contexts to describe substances speeding up reactions, and metaphorically in social settings. Avoid in overly casual scenarios. |
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Frequently asked questions: Agent vs Catalyst
What's the difference between Agent and Catalyst?
Agent: A person or thing that does something for another person or thing. Catalyst: Something that helps a change happen faster.
Which is more common: Agent and Catalyst?
Agent is the most common in everyday English.
Can you show an example of each?
Agent: The secret agent infiltrated the enemy's facility. Catalyst: The enzyme acts as a **catalyst** for the biological reaction.
Can I use Agent and Catalyst interchangeably?
Not always. Agent and Catalyst are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.