Typescript introduces various types for defining variables:Primitives types like Boolean, Number, and String are similar to JavaScript.Typescript also includes composed types such as Array, Tuple, Enum, and Object.The Any type represents any other type.Null and Undefined have specific meanings where Null signifies empty or reset value, while Undefined is for unset values.Unknown type is used when the type of data from external sources is unknown.Void represents no type and is used for functions that don't return anything.Never type signifies a type that never occurs, often seen in functions that always throw errors.Generic type (T) allows accepting any type while enforcing type checking.Unions and Intersections are essential for type declaration in Typescript.