Used as a collective noun for the populace and, in plural, for specific audience groups.
Definitions
Ordinary people in general; the community or populace. The government must act in the interests of the public.
A particular group of people with shared characteristics that is targeted or served. The museum's new exhibition is aimed at younger publics.
Synonyms
the public
the people
the populace
the masses
the general public
the community
the citizenry
the population
the audience
the crowd