Crack In/On the Wall

We say "a crack in the wall. "

"Crack on the wall" would generally be used for an unsightly surface crack, for example:

"This is a brand new house and there's a crack on the wall in the living room."

"Crack in the wall" would usually be used for a deeper crack, one you might even be able to see through, for example:

"I was able to see what they were doing in the next room by looking through

Selvakumar

Dear teachers,

Is there a significant difference between "crack in the wall" and "crack on the wall"?

Thank you for your time and help.