Matrimony vs Union

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

Matrimony

FormalTop 3,000 (common)B1noun

Union

Top 2,000 (common)B1noun
Most formal: MatrimonyMost common: Union
 MatrimonyUnion
Pronunciation🇬🇧 //ˈmætrɪməni//🇺🇸 //ˈmætrɪmoʊni//🇬🇧 /["/ˈjuːniən/"]/🇺🇸 /["/ˈjuːniən/"]/
MeaningMarriage, the state of being married.A group of people or organizations joined together for a common purpose.
ExampleTheir matrimony was celebrated with a grand wedding ceremony.The labor union negotiated better wages for its members.
RegisterFormalNeutral
How commonTop 3,000 (common)Top 2,000 (common)
CEFR levelB1B1
Part of speechnounnoun
Collocationsenter matrimony, sacred matrimony, blessed matrimonylabor, trade, trades, form, organize, set up, be affiliated to something, represent somebody/​something, negotiate (something), confederation, federation, movement, close, loose, full, create, form, dissolve, union between, union with, civil, legal, holy, allow, recognize
Antonymsdivorce, separationdisunion, division, separation
Common mistakesConfused with 'matrimonial' which refers to things related to marriage., Using it interchangeably with 'relationship', which has a broader meaning.Confusing with 'unit', which means one part of something., Using 'unions' incorrectly in singular contexts., Mispronouncing the word, especially the 'u' sound.
Usage notesUsed in formal contexts, often related to legal or religious aspects of marriage. Not appropriate in casual conversations.Used in contexts like labor unions or political unions. It's appropriate in formal discussions or writing. Avoid using it in casual conversation unless referring to a specific organization.

Frequently asked questions: Matrimony vs Union

What's the difference between Matrimony and Union?

Matrimony: Marriage, the state of being married. Union: A group of people or organizations joined together for a common purpose.

Which is more formal: Matrimony and Union?

Matrimony is the most formal of these.

Which is more common: Matrimony and Union?

Union is the most common in everyday English.

Are Matrimony and Union the same CEFR level?

Matrimony: B1, Union: B1 on the CEFR scale.

What part of speech are Matrimony and Union?

Matrimony: noun, Union: noun.

Can you show an example of each?

Matrimony: Their matrimony was celebrated with a grand wedding ceremony. Union: The labor union negotiated better wages for its members.

Can I use Matrimony and Union interchangeably?

Not always. Matrimony and Union 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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