Wrong Guess
Noun and する verb
かんちがい
「すみません、間違えました。違う人と 勘違いしました。」「正確には誰と間違えたんですか？お願いします。教えてください。」
"Excuse me, my mistake. I thought you were someone else." "Exactly who did you mistake me for? Please. Tell me."
An intuition difference is a misunderstanding or wrong guess. Sorry! My intuition was off.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.