In Go, the terms "package" and "module" have specific meanings and refer to different concepts.
A package in Go is a collection of related Go source code files that are compiled together into a single unit. Packages provide a way to organize code into reusable and easily sharable components. A Go package can be a library, a command-line tool, or any other type of Go program.
On the other hand, a module in Go is a collection of related Go packages that are versioned together. Modules provide a way to manage dependencies between packages and ensure that different versions of packages do not conflict with each other. A Go module is defined by a go.mod file in the root directory of the module.
To summarize, a package is a single unit of code that can be used by other programs, while a module is a collection of packages that are versioned together to manage dependencies.