Did anyone else notice this?

[Andy Mills]

No: HPFGUIDX 190710

Just a little point I picked up last time I listened to the books.  Did 
anyone else notice that, when the dementors were first mentioned, before 
Harry actually saw a dementor and understood what they actually were, 
everyone just called them the Azkaban guards.  Once Harry had seen a 
dementor, everyone called them dementors when referring to them rather 
than just the Azkaban guards.  Just a little thing I noticed after 
listening to the books a few times, I didn't take any notice the first 
time but it became more obvious after a few listens.

AJM