How are traffic circles different from roundabouts?

• The roundabouts contain parking spaces while traffic circles don’t
• The roundabouts allow large commercial vehicles while traffic circles don’t
• The centre island of roundabouts is smaller than the traffic circles
  Explanation:

  "There are differences between traffic circles and roundabouts. The centre island of a roundabout is smaller than the centre island of a traffic circle."
• The roundabouts are controlled by traffic signs and signal while traffic circles don’t