Law vs Rule

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

Law

FormalTop 1,000 (very common)A2noun

Rule

Top 1,000 (very common)A1noun
Most formal: Law
 LawRule
Pronunciation🇬🇧 /["/lɔː/"]/🇺🇸 /["/lɔː/"]/🇬🇧 /["/ruːl/"]/🇺🇸 /["/ruːl/"]/
MeaningRules made by a government to keep order.A statement that tells you what you can or cannot do.
ExampleThe law requires that all drivers have insurance.The rule of the game is to score the most points.
RegisterFormalNeutral
How commonTop 1,000 (very common)Top 1,000 (very common)
CEFR levelA2A1
Part of speechnounnoun
Collocationsadministrative, case, civil, become, apply, enforce, allow something, authorize something, permit something, court, case, suit, above the law, against the law, beyond the law, as the law stands, law and order, the law of the land, administrative, case, civil, become, apply, enforce, allow something, authorize something, permit something, court, case, suit, above the law, against the law, beyond the law, as the law stands, law and order, the law of the land, administrative, case, civil, become, apply, enforce, allow something, authorize something, permit something, court, case, suit, above the law, against the law, beyond the law, as the law stands, law and order, the law of the land, practise/​practice, firm, schoolbasic, cardinal, first, set, create, develop, draw up, apply, be applicable, operate, book, change, according to the rules, against the rules, contrary to the rules, a breach of the rules, a violation of the rules, a body of rules, basic, cardinal, first, set, create, develop, draw up, apply, be applicable, operate, book, change, according to the rules, against the rules, contrary to the rules, a breach of the rules, a violation of the rules, a body of rules, basic, cardinal, first, set, create, develop, draw up, apply, be applicable, operate, book, change, according to the rules, against the rules, contrary to the rules, a breach of the rules, a violation of the rules, a body of rules, general, as a rule, be the rule, authoritarian, harsh, direct, impose, under… rule, the rule of law
Antonymsanarchy, chaoschaos, anarchy, disorder
Common mistakesConfused with 'lawsuit' — remember 'law' is a set of rules, while 'lawsuit' refers to a legal case., 'Law' vs. 'rule' — 'law' is official, while a 'rule' can be informal or less strict.Confused with 'ruling' which refers specifically to a decision made by a judge., Using 'rules' incorrectly in the singular form when referring to multiple., Mistaking 'rule' for 'law', which has stronger implications and consequences.
Usage notesUse 'law' in formal contexts when discussing legal matters. Avoid in casual conversations unless relevant to the topic.Use 'rule' in contexts relating to guidelines, regulations, or laws. It is appropriate in both formal and informal situations. Avoid using it in overly casual settings where more casual terms like 'guideline' might fit better.

Frequently asked questions: Law vs Rule

What's the difference between Law and Rule?

Law: Rules made by a government to keep order. Rule: A statement that tells you what you can or cannot do.

Which is more formal: Law and Rule?

Law is the most formal of these.

Are Law and Rule the same CEFR level?

Law: A2, Rule: A1 on the CEFR scale.

Can I use Law and Rule interchangeably?

Not always. Law and Rule 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.

Related comparisons