mistake

a wrong action attributable to bad judgment or ignorance or inattention; "he made a bad mistake"; "she was quick to point out my errors"; "I could understand his English in spite of his grammatical faults"

an understanding of something that is not correct; "he wasn't going to admit his mistake"; "make no mistake about his intentions"; "there must be some misunderstanding--I don't have a sister"

part of a statement that is not correct; "the book was full of errors"

identify incorrectly; "Don't mistake her for her twin sister"

to make a mistake or be incorrect