Is a traffic circle the same as a square ?
So, the circle road around a square is roundabout.
In the photograph I posted, there was a square (I've forgotten the name of it, sorry) in a city. Within the confines of that square was a roundabout - that is a circular structure which traffic goes around in a specific direction.
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.
Note that 'square' can have this meaning (my emphasis):
- (capital letter when part of name) an open area in a town, sometimes including the surrounding buildings, which may form a square.