Rust: What is the difference between async channels and oneshot?

1use tokio::sync::{mpsc, oneshot};
2
3// mpsc
4let (tx, mut rx) = mpsc::channel(32);
5tx.send(1).await.unwrap();
6tx.send(2).await.unwrap();
7
8// oneshot
9let (tx, rx) = oneshot::channel();
10tx.send("hello").unwrap();
11let val = rx.await.unwrap();