てん
ころ
None
If your car runs into a cloud you'll revolve around it instead of going straight through. Clouds are really hard to see through, so even though you're trying not to, you revolve in a tight circle up and around the cloud anyway.
You have to revolve around the cloud ten (てん) times before it disappears and you're able to go through.
Currently there are no similar looking kanji which exist in the WaniKani learning system