misunderstanding

/M IH0 S AH0 N D ER0 S T AE1 N D IH0 NG/
noun
  1. 1

    A mistake as to the meaning of something or a specific point of view; erroneous interpretation or comprehension; misconception.

  2. 2

    A disagreement; difference of opinion; dissension; quarrel.

verb
  1. 1

    To understand incorrectly, while believing one has understood correctly.

Source: https://en.wiktionary.org/wiki/misunderstanding