Find and Replace whole folder content - Word files

[Leslie]

Much pretty sure about getting solution from this forum!

Got a code, and the code needs execution so that the pointed folder, containing Word files, completely 'Find and Replace' the files' content in whole.

Much obliged if the below code gets optimized too (quick execution)!
Below is the F/R code:

Sub FindAndReplaceMultiItems()
  Dim strFindText As String
  Dim strReplaceText As String
  Dim nSplitItem As Long
   
  Application.ScreenUpdating = False

  strFindText = "northenn,westenn"
  strReplaceText = "northern,western"
  
  nSplitItem = UBound(Split(strFindText, ","))

  ' Find each item and replace it with new one respectively.
  For nSplitItem = 0 To nSplitItem
    With Selection
      .HomeKey Unit:=wdStory
      With Selection.Find
        .ClearFormatting
        .Replacement.ClearFormatting
        .Text = Split(strFindText, ",")(nSplitItem)
        .Replacement.Text = Split(strReplaceText, ",")(nSplitItem)
        .Format = False
        .MatchWholeWord = False
      End With
    Selection.Find.Execute Replace:=wdReplaceAll
  End With
Next nSplitItem

  Application.ScreenUpdating = True

MsgBox "DONE EXECUTION"
End Sub

Thanks.