Crowd, Mass, and Public, Distinguished
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
A crowd is people in close proximity; a mass shares an interest without closeness; a public shares ideas across a diffuse whole.
Show
A concert crowd, online-game players as a mass, and scattered supporters of a position as a public illustrate the three.
Watch for
A mass shares interests and a public shares ideas; collapsing the terms erases what each holds in common.