Group vs Union

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

Group

Top 1,000 (very common)A1noun

Union

Top 2,000 (common)B1noun
Most common: Group
 GroupUnion
Pronunciation🇬🇧 /["/ɡruːp/"]/🇺🇸 /["/ɡruːp/"]/🇬🇧 /["/ˈjuːniən/"]/🇺🇸 /["/ˈjuːniən/"]/
MeaningA set of people or things that are together.A group of people or organizations joined together for a common purpose.
ExampleThe teacher divided the class into small groups for the project.The labor union negotiated better wages for its members.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR levelA1B1
Part of speechnounnoun
Collocationsbig, large, wide, create, form, found, form, split up, comprise, leader, member, activity, as a group, in a/​the group, within a/​the group, divide somebody/​something into groups, big, large, wide, create, form, found, form, split up, comprise, leader, member, activity, as a group, in a/​the group, within a/​the group, divide somebody/​something into groups, big, large, wide, create, form, found, form, split up, comprise, leader, member, activity, as a group, in a/​the group, within a/​the group, divide somebody/​something into groupslabor, 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
Antonymsindividual, loner, solodisunion, division, separation
Common mistakesConfused with 'groupe' which is not an English word., Using 'group' as a verb incorrectly; remember it's mainly a noun., Saying 'group of people' instead of just 'group' when context is clear.Confusing with 'unit', which means one part of something., Using 'unions' incorrectly in singular contexts., Mispronouncing the word, especially the 'u' sound.
Usage notesUse 'group' when talking about multiple people or items. It's often used in contexts like organizing activities or discussing teams. Avoid using it in very formal writings where specific terms may be preferred.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: Group vs Union

What's the difference between Group and Union?

Group: A set of people or things that are together. Union: A group of people or organizations joined together for a common purpose.

Which is more common: Group and Union?

Group is the most common in everyday English.

Are Group and Union the same CEFR level?

Group: A1, Union: B1 on the CEFR scale.

Can I use Group and Union interchangeably?

Not always. Group 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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