The detour caused much 'confusion'. [=the detour confused many people; the detour made many people uncertain about which roads to use]
Changing the name of the company will only lead to 'confusion'. [=make people uncertain]
There was total/mass 'confusion' when the truck hit the restaurant.
(..) the most sufficient memory. On the day I first met him. I'd like you to see it. If you want. I'm to admit to some confusion for receiving your letter, Mr. Dumbledore. In all the years Tom's been here, he's never once had a family visitor. There have been incidents with the other children-- (..)2009 Harry Potter and the Half-Blood Prince