1. Memory Management: One key difference between Haskell and Rust is their approach to memory management. Haskell relies on a garbage collector for automatic memory management, while Rust uses a system of ownership, borrowing, and lifetimes to ensure memory safety and prevent memory leaks or data races.

2. Concurrency: Haskell uses laziness and immutability as its primary means of handling concurrency, allowing for easy parallelism. In contrast, Rust offers a concurrency model based on ownership and borrowing, ensuring thread safety through the type system and eliminating data races at compile time.

3. Type System: Another significant difference is the type system of Haskell and Rust. Haskell employs a powerful type inference system that ensures strong static typing, while Rust uses a unique system of traits and lifetimes to enforce memory safety without sacrificing performance.

4. Error Handling: In terms of error handling, Haskell relies heavily on its monadic structure and laziness to manage exceptions and errors effectively. Rust, on the other hand, uses Result types and the unwrap method to handle errors in a safe and concise manner, without sacrificing performance.

5. Syntax and Paradigm: Haskell is a purely functional language with a focus on immutability and higher-order functions, while Rust combines imperative, functional, and object-oriented paradigms to provide a flexible and efficient programming environment.

6. Tooling and Ecosystem: The tooling and ecosystem surrounding Haskell and Rust also differ significantly. Haskell has a rich library ecosystem and strong community support, while Rust is known for its excellent documentation, package manager (Cargo), and extensive tooling for building efficient and safe applications.

In Summary, Haskell and Rust differ significantly in their approaches to memory management, concurrency, type systems, error handling, syntax, and tooling.