A tsunami hits a tree and your hat protects you from the water, but the hat itself is now covered in lacquer. You take it off and see that it's shiny and hard and protected.
You decide to scoop up the rest of the lacquer water and use it on your furniture to protect it from your shih tzu (しつ). Now it can't bite or scratch or ruin any of your things anymore!
Currently there are no similar looking kanji which exist in the WaniKani learning system