The bales in Minecraft are made using sheaves of wheat. The stiff, straw like shafts of cereal grains are called "straw", yet the block name uses the word "Hay", which refers to the softer, more flexible blades of grasses. Hay is also much greener than straw, yet the minecraft block is very yellow.

As such, block.minecraft.hay_block should be renamed to "Straw Bale".

(Alternatively the texture could be recoloured, and the recipe replaced with tall grass, but that seems overcomplicated)

This is obviously a minor issue, but it is frustrating to those of us who live in agricultural areas where the distinction is well understood, and it perpetuates a common semantic error.