Regime vs System

When to use each in English, with meaning, register, and examples.

Regime

FormalTop 3,000 (common)C1noun

System

Top 1,000 (very common)A2noun
Most formal: RegimeMost common: System
 RegimeSystem
Pronunciation🇬🇧 /["/reɪˈʒiːm/"]/🇺🇸 /["/reɪˈʒiːm/"]/🇬🇧 /["/ˈsɪstəm/"]/🇺🇸 /["/ˈsɪstəm/"]/
MeaningA government or system of rule.A set of connected parts that work together.
ExampleThe new regime implemented several reforms to improve the economy.The solar system consists of the sun and all the celestial bodies orbiting it.
RegisterFormalNeutral
How commonTop 3,000 (common)Top 1,000 (very common)
CEFR levelC1A2
Part of speechnounnoun
Collocationsnew, old, current, establish, install, set up, exist, come to power, emerge, change, against a/​the regime, under a/​the regime, regime under, a change of regime, the collapse of a regime, the fall of a regime, harsh, rigorous, strict, create, set up, start, be based on something, under a/​the regime, regime forcurrent, existing, modern, build, create, design, exist, be based on something, rest on something, in a/​the system, under a/​the system, system for, advanced, powerful, interactive, install, boot, boot up, run, crash, fail, software, design, performance, in a/​the system, auditory, biological, cardiovascular, in a/​the system, a shock to the system
Antonymsanarchy, democracychaos, disorder
Common mistakesConfused with 'regimen' (a systematic plan), Used 'regime' when referring to a specific government leader instead of the system, Pronounced incorrectly, often as 're-gime' instead of 're-zhim'Confused with 'systemic' - they are different., Using 'system' as a verb instead of a noun., Using 'system' in plural form incorrectly.
Usage notesUse this word in formal discussions about government or political systems. It may imply a negative or controlling system, like a dictatorship. Avoid using it in casual conversations.Used in various contexts like technology, science, and organization. It's appropriate in both spoken and written English, but avoid in very casual slang conversations.

Frequently asked questions: Regime vs System

What's the difference between Regime and System?

Regime: A government or system of rule. System: A set of connected parts that work together.

Which is more formal: Regime and System?

Regime is the most formal of these.

Which is more common: Regime and System?

System is the most common in everyday English.

Are Regime and System the same CEFR level?

Regime: C1, System: A2 on the CEFR scale.

Can I use Regime and System interchangeably?

Not always. Regime and System 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.

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