There are no specific collective noun for 'people in motion', unless you mean something like a crew of workers or a field of runners.
Yes, the noun 'crowd' is a common noun as a general word for a group of people. The noun 'crowd' is a collective noun for a group of people. The word 'crowd' is also a verb: crowd, crowds, crowding, crowded.
The crowd is watching him as people watch monkeys at a zoo.
Spectators, crowd or audience.
The collective noun is an audience of spectators.
The standard collective nouns for a large group are: a crowd of people a mob of people There many other collective nouns specifically for groups of people of different types, for example: a crew of sailors a crew of pilots a crowd of onlookers a gang of hoodlums an orchestra of musicians a slate of candidates a staff of employees a team of players a troop of boy scouts a troupe of dancers
Men
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A crowd of people.
1.A crowd
1.A crowd
A group, crowd,
A throng or a crowd.
A large number of people together is called a crowd or a group.
spectators, participants; crowd
spectators, participants; crowd
A large group of people is called a crowd. Use of the word in a sentence would be "A large crowd of people showed up at the free concert in the park."
A group of people listening to a lecture is commonly referred to as an audience.