Collective nouns

Collective nouns are names given to groups of people, animals, plants or things.

People
- an army of soldiers
- a gang of robbers
- a crew of sailors
- a staff of teachers
- a class of students

Animals and Plants
- a clump of trees
- a herd of elephants
- a nest of mice
- a bunch of grapes

Objects
- an album of stamps
- a bunch of keys
- a fleet of ships, cars
- a library of books
- a cluster of stars