Additional variable names (and proposed descriptions):
- Wooden pickaxe: "This actually has the shape of a pickaxe, but still not very durable."
- Iron pickaxe: "Iron is known for being hard and used for steel."
- Aluminium pickaxe: "Aluminium is soft and light. Slightly less durable than iron."
- Gold pickaxe: "Gold is corrosion-resistant but soft."
- Titanium pickaxe: "Made of a hard metal often used in prosthetics."
- Platinum pickaxe: "Platinum is well known for its limited reactivity."
- Diamond pickaxe: "Diamonds are one of the hardest materials."*
- Mythril pickaxe: "The ultimate pickaxe in the game."
(*) Some materials are (at least claimed to be) harder than diamonds.