Put a rice paddy together with other paddies and you'll see how much they differ. When you're driving or taking a train through the countryside it may seem like all of those rice paddies blurring together are all the same, but they can differ quite a bit!
To see how rice paddies differ, you need an eagle's (い) eye view. It can be hard to see from the ground, so soar up into the sky like an eagle and look down at the rice paddies together.
Currently there are no similar looking kanji which exist in the WaniKani learning system