'''Play''': each play and contained structures, vars entries, include_vars, role defaults and vars.
'''Host''': variables directly associated to a host, like inventory, facts or registered task outputs
Another aspect of scope is <tt>includes</tt> vs. <tt>imports</tt> and loosely speaking, control structures like <tt>loop</tt> and the deprecated <tt>with_items</tt>
* https://stackoverflow.com/questions/68863854/iterate-list-within-role-task-provide-each-element-as-vars-to-include-tasks
* https://docs.ansible.com/ansible/latest/playbook_guide/playbooks_reuse.html#comparing-includes-and-imports-dynamic-and-static-re-use
== Ansible with VSCode ==
