Student or Learner
Is there a difference between a "wafer biscuit" and a "wafer cookie"? Can we call a Kit-Kat bar "wafers" (since it has many layers of wafers)?
Then what's the difference between a cookie and a biscuit in the UK and Australia?
I would call a KitKat a "chocolate-coated wafer". It comes under the category of "chocolate bars" for me.