People:
* Assembly: A gathering of people for a specific purpose.
* Audience: A group of people watching a performance.
* Band: A group of musicians.
* Board: A group of people who govern an organization.
* Class: A group of students.
* Committee: A group of people appointed for a specific task.
* Congregation: A group of people gathered for religious worship.
* Crew: A group of people working together on a ship or aircraft.
* Crowd: A large gathering of people.
* Family: A group of people related by blood or marriage.
* Gang: A group of criminals.
* Group: A collection of people.
* Jury: A group of people sworn to give a verdict in a legal case.
* Mob: A large, disorderly crowd.
* Parliament: A body of elected representatives.
* Team: A group of people working together on a task.
* Troop: A group of soldiers.
Animals:
* Army: A large group of animals.
* Bed: A group of oysters.
* Bovine: A group of cattle.
* Colony: A group of ants, bees, or other social insects.
* Flock: A group of birds.
* Gaggle: A group of geese.
* Herd: A group of cattle, elephants, or other large animals.
* Litter: A group of young animals.
* Pack: A group of wolves, dogs, or other animals that hunt together.
* Shoal: A group of fish.
* Swarm: A large group of insects.
Things:
* Array: A collection of things arranged in a particular way.
* Batch: A quantity of things produced at the same time.
* Bunch: A group of things tied together.
* Bundle: A group of things wrapped together.
* Collection: A group of things gathered together.
* Fleet: A group of ships.
* Galaxy: A large group of stars.
* Heap: A large pile of things.
* Library: A collection of books.
* Pile: A group of things stacked on top of each other.
* Set: A group of things that belong together.
* Suite: A group of rooms.
Other:
* Alphabet: A collection of letters.
* Data: A collection of facts or information.
* Furniture: A collection of objects used to furnish a room.
* Jewelry: A collection of precious objects.
* Linen: A collection of bedsheets and towels.
* Luggage: A collection of bags and suitcases.
* Meteorology: A collection of weather patterns.
* Music: A collection of sounds arranged in a particular way.
* Poetry: A collection of poems.
* Software: A collection of programs for a computer.
* Vocabulary: A collection of words.
This list is not exhaustive, and new collective nouns are constantly being coined. You can find more examples by looking in dictionaries, thesauruses, and online resources.