confusion
con·fu·sion
 /kənˈfjuːʒən/  noun  ,  pl   -sions
  1 : a situation in which people are uncertain about what to do or are unable to understand something clearly
   [  noncount  ] The detour caused much confusion. [=the detour confused many people; the detour made many people uncertain about which roads to use]
    There is still some confusion as to the time of the meeting.
    There is a great deal of confusion about how the system works.
    Changing the name of the company will only lead to confusion. [=make people uncertain]
   [  count  ] the anxieties and confusions of teenage life
  2 [  noncount  ] : the feeling that you have when you do not understand what is happening, what is expected, etc.
   Her confusion was obvious.
   He stared in confusion and disbelief.
  3 [  noncount  ] : a state or situation in which many things are happening in a way that is not controlled or orderly
   a scene of confusion
   There was total/mass confusion when the truck hit the restaurant.
  4 [  noncount  ] : the act of mistakenly thinking that one person or thing is another
   Write clearly on the labels to avoid confusion.
   Confusion between/of the words “affect” and “effect” is common.