ArrayList in VB 2010 - What's wrong with my code?

ArrayList in VB 2010 - What's wrong with my code?

I was just wondering if anyone could point out where I am going wrong with
this code. I am working with an ArrayList called Nouns and have code which
adds the word that's picked from the ArrayList to another ArrayList called
NewArray().
The trouble is, when the Sub is called from a label_click event, it
doesn't keep the words stored in the NewArray where the code
NewArray.Add(WordChosen) is. I found this from debugging it, using
breakpoints and stepping.
The code for this part is here:
Sub GetNoun()
Dim Nouns As ArrayList = New ArrayList(16)
Nouns.Add("France")
Nouns.Add("Bird")
Nouns.Add("Doctor")
Nouns.Add("City")
...
Dim lblArray As Label() = {lblOne, lblTwo, lblThree, lblFour}
Start:
Dim WordChosen As String
WordChosen = Nouns(Random.Next(16))
If NewArray.Contains(WordChosen) Then
GoTo Start
Else
Dim LabelChosen As Label
LabelChosen = lblArray(Random.Next(4))
LabelChosen.Text = WordChosen
Nouns.Remove(WordChosen)
NewArray.Add(WordChosen)
End If
End Sub
What could I do to keep the words within the dynamic ArrayList? I hope
this makes sense and isn't a duplicate, but I am stuck for ideas.
Many thanks.