Constraint vs Restriction

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

Constraint

Top 2,000 (common)C1noun

Restriction

Top 2,000 (common)B2noun
 ConstraintRestriction
Pronunciation🇬🇧 /["/kənˈstreɪnt/"]/🇺🇸 /["/kənˈstreɪnt/"]/🇬🇧 /["/rɪˈstrɪkʃn/"]/🇺🇸 /["/rɪˈstrɪkʃn/"]/
MeaningA limit or restriction that controls what you can do.A rule that limits what you can do.
Example**constraints of time/money/space**The government imposed a restriction on the sale of alcohol after 10 PM.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)
CEFR levelC1B2
Part of speechnounnoun
Collocationsimportant, major, severe, impose, place, put, within a/​the constraint, without constraint, constraint ondraconian, harsh, severe, create, impose, introduce, affect something, apply, limit something, order, with restriction, with no restriction, without restriction, draconian, harsh, severe, create, impose, introduce, affect something, apply, limit something, order, with restriction, with no restriction, without restriction
Antonymsfreedom, liberty, independencefreedom, liberation, permissiveness
Common mistakesConfusing with 'consistency' due to similar sounds., Using 'constraint' as a verb; it is only a noun., Mixing up singular and plural forms, forgetting that 'constraints' refers to multiple limits.Confused with 'restriction' vs 'restrictions' - 'restrictions' is the plural form., Using 'restriction' without a preposition - usually needs 'on' or 'about'., Confusing 'restriction' with 'restraint' - they have different meanings.
Usage notesUsed in various contexts, such as legal, academic, or everyday situations to refer to limits. Generally neutral, but can be seen as formal in legal contexts.Use 'restriction' when talking about limits in rules or laws. It's neutral, so suitable for both spoken and written contexts. Avoid in casual conversations where simpler words like 'limit' might work better.

Frequently asked questions: Constraint vs Restriction

What's the difference between Constraint and Restriction?

Constraint: A limit or restriction that controls what you can do. Restriction: A rule that limits what you can do.

Which is more advanced: Constraint and Restriction?

Constraint is the highest level, at C1, on the CEFR scale.

Are Constraint and Restriction the same CEFR level?

Constraint: C1, Restriction: B2 on the CEFR scale.

What part of speech are Constraint and Restriction?

Constraint: noun, Restriction: noun.

Can you show an example of each?

Constraint: **constraints of time/money/space** Restriction: The government imposed a restriction on the sale of alcohol after 10 PM.

Can I use Constraint and Restriction interchangeably?

Not always. Constraint and Restriction 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.