Classify vs Group

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

Classify

Top 2,000 (common)B2verb

Group

Top 1,000 (very common)A1noun
Most common: Group
 ClassifyGroup
Pronunciation🇬🇧 /["/ˈklæsɪfaɪ/","/ˈklæsɪfaɪz/","/ˈklæsɪfaɪd/","/ˈklæsɪfaɪɪŋ/"]/🇺🇸 /["/ˈklæsɪfaɪ/","/ˈklæsɪfaɪz/","/ˈklæsɪfaɪd/","/ˈklæsɪfaɪɪŋ/"]/🇬🇧 /["/ɡruːp/"]/🇺🇸 /["/ɡruːp/"]/
MeaningTo sort or label things into groups.A set of people or things that are together.
ExampleThe teacher asked us to classify the animals into mammals, reptiles, and birds.The teacher divided the class into small groups for the project.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 1,000 (very common)
CEFR levelB2A1
Part of speechverbnoun
Collocationsclassify information, classify data, classify items, classify documents, classify speciesbig, 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 groups
Antonymsunclassify, misclassifyindividual, loner, solo
Common mistakesConfused with 'clarify', which means to make something clear., Using 'classify' without an object, as in 'I classify.', Confusing the order of words, like saying 'to classify on'.Confused 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.
Usage notesUse 'classify' in academic or professional contexts when sorting items into categories. Avoid in casual conversation unless referring to categorization in a fun or informal way.Use '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.

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Group

Frequently asked questions: Classify vs Group

What's the difference between Classify and Group?

Classify: To sort or label things into groups. Group: A set of people or things that are together.

Which is more common: Classify and Group?

Group is the most common in everyday English.

Which is more advanced: Classify and Group?

Classify is the highest level, at B2, on the CEFR scale.

Are Classify and Group the same CEFR level?

Classify: B2, Group: A1 on the CEFR scale.

What part of speech are Classify and Group?

Classify: verb, Group: noun.

Can you show an example of each?

Classify: The teacher asked us to classify the animals into mammals, reptiles, and birds. Group: The teacher divided the class into small groups for the project.

Can I use Classify and Group interchangeably?

Not always. Classify and Group 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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