Scottish, British Scones or Bannocks, But Surely Not Biscuits!

A scone is just a scone; unless it is a bannock; which is another name for a scone; unless that scone is a biscuit. In which case, it has no egg and just a touch of sugar. Alas. Then a biscuit is just a cousin of the poor scone or bannock. Or maybe it is the scone, that is the poor cousin. I am confused. What I am not confused about is the quest I've always been on to achieve that perfect