Kitty-Corner-Catty-Corner | Commonly Confused Words

Kitty corner

/ˈkɪti kɔːrnər/

Positioned diagonally across from something else, typically referring to buildings or streets.

/ˈkæti ˌkɔːrnər/

Positioned diagonally from something else, often used to describe locations or angles.

Kitty corner is the more common version in American English, while catty corner is slightly less common but still used.
Both terms describe something that is diagonally positioned or located across from something else.
Remember the terms have nothing to do with cats despite their sound; they both derive from cater, an old word meaning diagonal.
In some regions, one form may be more popular than the other, so it might be a regional preference.
Think of kitty as a playful term and catty as an acute one, although they mean the same thing.