Solid, liquid, gas, and plasma fit the woo-woo explanation of earth, water, air, and fire quite well though. It's actually eerie how well it fits.

We have discovered way more exotic states of matter though. And for a preindustrial society there are only three phenomena that involve plasma: the sun, the aurora borealis, and lightning.

Fire is not a state of matter, it's a process. Sadly, my prog rock band "Solid Gas and a Process that Creates Heat and Light" never really took off.

Hey, never thought of it like that!