Marriage vs Union

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

Marriage

Top 1,000 (very common)B1noun

Union

Top 2,000 (common)B1noun
Most common: Marriage
 MarriageUnion
Pronunciation🇬🇧 /["/ˈmærɪdʒ/"]/🇺🇸 /["/ˈmærɪdʒ/"]/🇬🇧 /["/ˈjuːniən/"]/🇺🇸 /["/ˈjuːniən/"]/
MeaningA legal union between two people, usually involving a ceremony.A group of people or organizations joined together for a common purpose.
ExampleMarriage is a significant commitment between two people.The labor union negotiated better wages for its members.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR levelB1B1
Part of speechnounnoun
Collocationsgood, happy, successful, have, propose, enter into, last, be over, break down, vows, plans, proposal, by a marriage, from a marriage, by marriage, ask for somebody’s hand in marriage, win somebody’s hand in marriage, the break-up of a marriage, good, happy, successful, have, propose, enter into, last, be over, break down, vows, plans, proposal, by a marriage, from a marriage, by marriage, ask for somebody’s hand in marriage, win somebody’s hand in marriage, the break-up of a marriage, Christian, Jewish, etc., celebrate, be held, take place, ceremony, certificate, contract, at a/​the marriage, marriage tolabor, 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 'marriage' vs 'married'., Using 'marriage' in a context that implies a temporary relationship., Incorrectly pluralizing 'marriage' as 'marriages' when referring to the concept in general.Confusing with 'unit', which means one part of something., Using 'unions' incorrectly in singular contexts., Mispronouncing the word, especially the 'u' sound.
Usage notesUse 'marriage' in both formal and informal contexts. Appropriate when discussing partnerships, legal matters, or family. Avoid in casual settings when making jokes.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.

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Marriage

Frequently asked questions: Marriage vs Union

What's the difference between Marriage and Union?

Marriage: A legal union between two people, usually involving a ceremony. Union: A group of people or organizations joined together for a common purpose.

Which is more common: Marriage and Union?

Marriage is the most common in everyday English.

Are Marriage and Union the same CEFR level?

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

What part of speech are Marriage and Union?

Marriage: noun, Union: noun.

Can you show an example of each?

Marriage: Marriage is a significant commitment between two people. Union: The labor union negotiated better wages for its members.

Can I use Marriage and Union interchangeably?

Not always. Marriage 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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