Is it possible to two have pacakage name in a same folder in golang

I am a new person to golang.

Basically in node.js i used to organise my general functions like i will put in

lib/
  validation.js
  convert.js
  ..

Likewise i will organize.
I need to do the same here..

I tried like

lib/
 validation.go ( package name validator )
 convert.go ( package name converter )

and in the main.go which is present at the root level of my src folder
i import like "./lib" it works only if both package name is same else it throws error.

since i need separate names to call those function i cant give same packages coz of readability.

so basically i can create another folder in lib and with different Package name i can give.
This is the option available or some other possibility is there.

Please suggest a good practice and optimum way.

Per the "Effective Go" documentation on golang.org:

> Another convention is that the package name is the base name of its source directory;