What is the difference between traffic_calming=choker and traffic_calming=chicane?

Hi, isnt the picture in the wiki clear ? A chicane needs more space or room, but has more effect on a driver since the vehicle needs to go left and right, at a choker you’ll be able to keep your speed at an undesirable high level if theres no opposing traffic.

The chicane as two narrowing sections staggered and on alternate sides, that require a zig-zag to drive through. The choker as narrowing from both sides at same point. both intended to reduce traffic speed.