en-US/about_bolt_module.help.txt

module
  Modules are shareable, reusable packages of Puppet content. They can include
  tasks, plans, functions, and other types of content that you can use in your
  project. You can download and install modules to your project from the
  Puppet Forge or write your own modules. Bolt also ships with several helpful
  modules pre-installed that are available to all of your projects.
   
  Bolt makes it easy to manage the modules that your project depends on. You
  can use Bolt commands to install a project's modules, add new modules to a
  project, and view the modules that are available to the project.
   
  To learn more about managing modules in a project, see the documentation.
  To learn how modules are loaded by Bolt, see the 'modulepath' guide.
 
Documentation
  https://pup.pt/bolt-modules