>>919
In Rust, global variables are called static variables.
https://doc.rust-lang.org/book/ch20-01-unsafe-rust.html

static: Global variable or lifetime lasting the entire program execution.
https://doc.rust-lang.org/book/appendix-01-keywords.html

2つ目の説明の前者はstatic変数(=グローバル変数)のこと
後者は'staticライフタイムのこと