confusion
US /kənˈfjuː.ʒən/
UK /kənˈfjuː.ʒən/

1.
a state of not being clear about what is happening or what to do
:
•
There was a lot of confusion about the new rules.
•
The sudden change caused widespread confusion.
2.
the act of mistaking one person or thing for another
:
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There was a confusion between the two similar-looking packages.
•
The names were so similar that it led to frequent confusion.