what is the different between Kotlin File/Class and Kotlin Script

Question

i programming kotlin language to some weeks, and i always start with new File/Class, and I've noticed lately to kotlin Script in the menu and i ask now what's different between the Script and the File in kotlin

Answer 1

In a Kotlin source *.kt file, you can place top-level declarations, such as types and top-level functions and properties, but not code statements that are not nested into some declarations.

A Kotlin Script *.kts file, on contrary, contains code statements on the top level without any nesting. These statements are an equivalent of a main function. It is allowed to contain types, too, but with some limitations similar to those placed on nested type declarations.