Variable is a symbolic name or reference to an information. They provide a way of labeling data with a descriptive name and provide a way to manipulate information. In Rust, to declare a variable, you use a "let" statement.

Cargo is package manager for Rust's and its build system. Cargo is used to search for, install, and manage packages that you want to use and build them. Cargo is also the test runner, and the documentation generator.

Rust is a systems programming language pursuing the trifecta: safety, which is guaranteed at compile time; fearless concurrency, which is a lot easier when things are safe; and blazingly fast speed due to zero-cost abstractions and other nice things.

Exceptions or Errors (in rust) is a state of a program when a piece of code does not execute as it should. It may be due to a resource that should be available at this time but is not.

Arrays in Rust are not dynamic, array size and type of data it will hold need to be defined before compilation. Vector are the dynamic arrays in Rust.