For people:
* Group: A general term for any collection of people.
* Crowd: A large gathering of people, often in a public place.
* Assembly: A formal gathering of people for a specific purpose.
* Team: A group of people working together towards a common goal.
* Community: A group of people living in the same place or sharing common interests.
* Society: A large group of people living together in an organized way.
* Congregation: A gathering of people for religious worship.
For animals:
* Herd: A group of large grazing animals, like cattle or buffalo.
* Flock: A group of birds or sheep.
* Pack: A group of wolves, dogs, or other animals that hunt together.
* School: A group of fish swimming together.
* Colony: A group of insects living together in a structured society.
* Pride: A group of lions.
* Troop: A group of monkeys.
If you tell me what kind of group you're interested in, I can give you a more specific answer!