Dear Mojang.
In your latest release, 20w09a, you have logically enough named the leaves of the warped tree Warped Wart Block. According to this logic the leaves of the Crimson Tree should be named Crimson Wart Block. It is not, it's named Nether Wart Block, which makes no sense.
Best Regards,
Christian Bjørnskov - a well-satisfied user of Minecraft
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I agree, and there should be crimson wart and warped wart plants!