There is no different, but just a term that some countries use to call their Aunt Sue, Auntie Sue. An Aunt is the sister of either your mother or father. In England they say 'mum' instead of 'mom' or 'mother' like we do in the Western part of the world. It's a play on words.
Auntie would be the usual spelling of the familiar form of aunt.
You can say "shangazi" in Swahili to refer to auntie or aunt.
Your sister's aunt (who is also your aunt) is the baby's great aunt. The baby is a great niece or great nephew of your sister's aunt.
modryb (aunt)
eine Tante = Auntie meine Tante = My Auntie
auntie, aunt.
An auntie is another name for someone's aunt, the sister or sister-in-law of your mother or father.
An auntie is another name for someone's aunt, the sister or sister-in-law of your mother or father.
She is called Auntie Em, short for Emily.
an aunt is called une tante in French. Tatie would be the equivalent of auntie.
Your aunt's daughter would be your cousin.
Anti -- although there is also the more formal word modryb ("aunt").Helo, Anti Bethan : Hello, Auntie BethanFy modryb a fi : My aunt and I