In one, the participants do not interact with each other, and in the other, they do interact with each other. (Apex)
of Crowd
It could be seen in streets, on roads, in markets, on railway stations etc. it is mostely purposesless and has no particular aim.
i don't understand i have no idea
To call attention to oneself
i don't understand i have no idea
The casual crowd gathers around a specific event and its members have little interaction with one another. A conventional crowd gathers for a socially sanctioned purpose. An expressive crowd gathers specifically for the purpose of letting out emotions. An acting crowd focuses on a specific action or goal.
'free and easy'
Enochlophobia, Demophobia or Ochlophobia.
Slacks (meaning casual trousers) is plural. It has no singular form
"Madding" means - extreme excitement, confusion, or agitation.So "Far From The Madding Crowd" means in a place of quiet and tranquility.
If you mean 'itinerant', a person who travels from place to place, as in a casual labourer