group

Noun

• a set that is closed, associative, has an identity element and every element has an inverse

• (chemistry) two or more atoms bound together as a single unit and forming part of a molecule

• any number of entities (members) considered as a unit

Verb

• form a group or group together

• arrange into a group or groups
  • Can you group these shapes together?
    

Related words

• Synonyms: 
  mathematical group , radical , chemical group , grouping , aggroup