Law vs Principle

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

 LawPrinciple
MeaningRules made by a government to keep order.A basic truth or rule that guides behavior
Registerformal-
CEFR levelA2B2
Part of speechnounnoun
Usage notesUse 'law' in formal contexts when discussing legal matters. Avoid in casual conversations unless relevant to the topic.Used in discussions about ethics, laws, or personal beliefs. Avoid using in casual conversations to maintain clarity, as 'principle' can be confused with 'principal', which refers to a person in a position of authority.

Frequently asked questions: Law vs Principle

What's the difference between "Law" and "Principle"?

"Law" means: Rules made by a government to keep order. "Principle" means: A basic truth or rule that guides behavior

When should I use "Law" and "Principle"?

"Law" is formal.

Are "Law" and "Principle" the same CEFR level?

"Law" is at A2, "Principle" is at B2 on the CEFR scale.