Thanks, WaniKani mnemonic. That totally helps.
Now I confuse them constantly. Possibly because they are extremely similar, and you’ve just given me almost identical mnemonics (imagine a sickle cutting some grain).
Is the sickle radical the one with the grains? Yes! The grain radical is the one without the grains, but with the sickle. Simple!
(I know, I shouldn’t be salty, but I get this one wrong more than I get it right. It won’t be the first time I invent entirely my own mnemonic, but… that one really is pretty special.)