groups
n. countable A1 Beginner US //ˈɡɹups// UK //ɡɹˈuːps// groups
n. a number of people or things that are together in one place or are connected in some way.
n. a number of individuals or objects located, gathered, or classed together.
The teacher divides the students into small groups for the activity.
Several groups of tourists were waiting outside the museum before it opened for the day.
Sociologists often study how different social groups interact within a city to understand the broader patterns of urban development and cultural exchange.
Usage
As a collective noun, it can take a singular or plural verb depending on whether the focus is on the unit or the individuals.