I want to rename the bulk files and folders at single time,how I can do this with batch scripting

I want to rename the bulk files and folders at single time,how I can do this with batch scripting

I have the code for only to change either file or folder,not both

@echo off
SETLOCAL ENABLEDELAYEDEXPANSION

SET old=newdocV9
SET new=newdocV10
for /f "tokens=*" %%f in ('dir /b *.*') do (
  SET newname=%%f
  SET newname=!newname:%old%=%new%!
  move "%%f" "!newname!"
)

I am looking for the code to rename the files and folders at a single time using batch script