group

/gru:p/
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group

A teacher asks the children to form a group for a game.

Definition
  1. Noun:

    • A collection of people or things: A number of individuals or items that are located, gathered, or classed together.
    • A set with a mathematical structure: In mathematics, a set equipped with an operation that combines any two elements to form a third, satisfying four conditions: closure, associativity, identity, and invertibility.
    • A unit within a molecule: In chemistry, a combination of atoms that behave as a single unit within a compound.
  2. Verb:

    • To form into a group: To gather or arrange people or things into one or more collections.
    • To classify together: To put people or things into categories based on shared characteristics.
Usage Examples
  • Noun:

    • A small group of students waited outside the classroom.
    • In algebra, the integers form a group under the operation of addition.
    • The hydroxyl group (-OH) is common in many organic molecules.
  • Verb:

    • The teacher asked the children to group themselves by birth month.
    • We can group the survey responses into three main categories.
Advanced Usage
  • "In-group": A social group to which a person psychologically identifies as being a member.

    • Employees often feel loyalty to their immediate in-group within the larger company.
  • "Reference group": A group to which an individual or another group is compared.

    • Aspiring professionals often use senior managers as their reference group.
  • "Group theory": The mathematical field dedicated to the study of algebraic structures known as groups.

    • Group theory has important applications in physics and chemistry.
Variants and Related Words
  • Grouping (n): The action of forming a group or groups; a set of things grouped together.

    • The new seating arrangement involved the careful grouping of team members.
  • Subgroup (n): A distinct group within a larger group.

    • Each department functions as a subgroup of the entire organization.
  • Regroup (v): To form into a new group or to reorganize.

    • After the break, we will regroup to discuss our findings.
Synonyms
  • Noun: Cluster, collection, assemblage, category, class, set, batch.
  • Verb: Assemble, gather, collect, categorize, classify, sort, arrange.
Related Phrasal Verbs
  • Group together: To gather or combine things or people.

    • Please group together all the invoices from last month.
  • Group under: To classify something within a specific heading or category.

    • These expenses can be grouped under "office supplies".
Related Idioms
  • A whole different ball game / A whole new ball game: An entirely new and often more difficult situation. (While not containing "group," this idiom is often used when comparing one set of circumstances to another.)

    • Managing five people is one thing, but leading a department of fifty is a whole new ball game.
  • Birds of a feather flock together: People with similar tastes, interests, or backgrounds tend to associate with one another. (This idiom describes the natural formation of groups.)

    • It's no surprise the artists all share a studio; birds of a feather flock together.
group

A teacher asks the children to form a group for a game.

Noun
  1. a set that is closed, associative, has an identity element and every element has an inverse
  2. (chemistry) two or more atoms bound together as a single unit and forming part of a molecule
  3. any number of entities (members) considered as a unit
Verb
  1. form a group or group together
  2. arrange into a group or groups
    • Can you group these shapes together?