sorry to jump in here Mac, but an interesting point .... sadly I lost everyone a long time ago, so I don't have anyone anymore .... they have all died .... aunties , uncles, cousins, family, they are all dead.
I just called my mother mum .... always just ..mum ... that's it, but in the UK it's slightly different as they say mummy sometimes, and the US they say ma & papa ...., I think Thai's say mama and papa also.