rewrite precedence rules for more clarify

Author: amarao

docs/docsite/rst/playbook_guide/playbooks_variables.rst

@@ -199,7 +199,7 @@ You can use the `set_fact` module to combine lists into a new `merged_list` vari
       - peach
       - plum
       - pear
-    
+
     tasks:
     - name: Combine list1 and list2 into a merged_list var
       ansible.builtin.set_fact:
@@ -425,16 +425,17 @@ Ansible does apply variable precedence, and you might have a use for it. Here is
 
   #. command line values (for example, ``-u my_user``, these are not variables)
   #. role defaults (as defined in :ref:`Role directory structure <role_directory_structure>`) [1]_
-  #. inventory file or script group vars [2]_
-  #. inventory group_vars/all [3]_
-  #. playbook group_vars/all [3]_
-  #. inventory group_vars/* [3]_
-  #. playbook group_vars/* [3]_
-  #. inventory file or script host vars [2]_
-  #. inventory host_vars/* [3]_
-  #. playbook host_vars/* [3]_
+  #. variables for group "all" defined inside of an inventory file or script [2]_
+  #. other group vars defined inside of an inventory file or script [2]_
+  #. inventory group_vars/all (a file in the directory group_vars/ adjacent to the inventory) [3]_
+  #. playbook group_vars/all (a file in the directory group_vars/ adjacent to the playbook) [3]_
+  #. inventory group_vars/* (a file in the directory group_vars/ adjacent to the inventory) [3]_
+  #. playbook group_vars/* (a file in the directory group_vars/ adjacent to the playbook) [3]_
+  #. host vars defined in an inventory file or script [2]_
+  #. inventory host_vars/* (a file in the directory host_vars/ adjacent to the inventory) [3]_
+  #. playbook host_vars/* (a file in the directory host_vars/ adjacent to the inventory) [3]_
   #. host facts / cached set_facts [4]_
-  #. play vars
+  #. play vars (defined in the section vars for the play)
   #. play vars_prompt
   #. play vars_files
   #. role vars (as defined in :ref:`Role directory structure <role_directory_structure>`)
@@ -446,6 +447,8 @@ Ansible does apply variable precedence, and you might have a use for it. Here is
   #. include params
   #. extra vars (for example, ``-e "user=my_user"``)(always win precedence)
 
+If inventory file is located in the same directory as a playbook, adjacent group_vars/ are interpreted twice both as inventory group_vars/ and playbook group_vars/, therefore, getting precedence of the playbook group_vars.
+
 In general, Ansible gives precedence to variables that were defined more recently, more actively, and with more explicit scope. Variables in the defaults folder inside a role are easily overridden. Anything in the vars directory of the role overrides previous versions of that variable in the namespace. Host and/or inventory variables override role defaults, but explicit includes such as the vars directory or an ``include_vars`` task override inventory variables.
 
 Ansible merges different variables set in inventory so that more specific settings override more generic settings. For example, ``ansible_ssh_user`` specified as a group_var is overridden by ``ansible_user`` specified as a host_var. For details about the precedence of variables set in inventory, see :ref:`how_we_merge`.