Nouns

(n)group, groupingany number of entities (members) considered as a unit
(n)group, radical, chemical group(chemistry) two or more atoms bound together as a single unit and forming part of a molecule
(n)group, mathematical groupa set that is closed, associative, has an identity element and every element has an inverse

Verbs

(v)grouparrange into a group or groups“Can you group these shapes together?”
(v)group, aggroupform a group or group together