group

noun
  1. A number of people or things that are located, gathered, or classed together. noun
    The group of students met in the library to study.
    A group of islands can be found in the Pacific Ocean.
  2. A set of elements, such as numbers or objects, that are considered as a unit because of a common property or relationship. noun
    In mathematics, a group is a set equipped with an operation that combines any two of its elements to form a third element.
    The periodic table is organized into groups of elements with similar properties.
  3. A number of musicians who play popular music together. noun
    The rock group released a new album last month.
    She joined a jazz group as the lead singer.
  4. To arrange or place into groups; to classify. verb
    The teacher asked the students to group themselves by birth month.
    The librarian grouped the books by genre.
  5. To form a group or groups. verb
    The children grouped together to play a game.
    The committee grouped into smaller teams to tackle different tasks.