collective noun
US /kəˌlek.tɪv ˈnaʊn/
UK /kəˌlek.tɪv ˈnaʊn/

1.
a noun that refers to a group of individuals (e.g., 'team,' 'flock,' 'committee')
:
•
The word 'flock' is a collective noun for birds.
•
A 'team' is a collective noun for a group of players.