It has been said that Britain and the USA are ‘Two countries divided by a common language’ (a saying whose origin causes heated arguments and makes people Wilde, for Shaw).
Let’s make that three, to include Australia, with its close attachment to the British version of English (but not exclusively). There are no regional differences in Australian pronunciation, except for my adopted home State of South Australia, where, irrespective of class, we tend to ape the English upper-class pronunciation of words like dance (we say darnce) and plant (we say plarnt) etc. The UK has more dialects (and therefore differences in pronunciation) than there are positions in the Karma Sutra and the US has its Southern, Texan, Boston, hillbilly etc variations of its home tongue.
I won’t bother with differences in spelling; both writer and reader would lose the will to live at that point.
These limited lists have been gleaned from my frequent visits to the US in a past life and the almost complete domination of US media and Hollywood in the lives of Australians, to the point that our grandchildren now think a soft drink is a soda. Any attempt at correction is met with ‘OK boomer’.
So (which seems to have somehow become the default word at the beginning of any statement) for the sake of simplicity, I’m going to make a general divide between Auslish and USlish (A and U for abbreviation), most of which come about via placing a different empharsis on the same sylabble.
(I am unschooled in phonetics so please bear with my crude approximations below.)
For example, in the kitchen:
A – Ta-mart-o U – Toe-mate-o (ditto with potato)
A – Herbs U – Erbs
A – O (as in octopus)- rer-gar-no U – O (as in octopus)-regga-no
A – Bazzil (as in Fawlty) U – Bazel
A – Bar-nar-na U – Bar-nanna
A – Da-fence U – Dee-fence
A – A dress U – Add-ress
A – Zed U – Zee
A – Lift U – Elevator
A – Nappy U – Diaper
A – Rear storage in car = boot U = trunk
A – Bonnet (car) U – Hood
A – Autumn U – Fall
A – Bum = backside U = vagrant
A – Dummy U – Pacifier
A – Footpath U -Sidewalk
A – Ground floor U – First floor
A – Tap U – Faucet
A – Toilet U – Bathroom
A – Jumper U – Sweater
A – Biscuits U – Cookies
A – Capsicum U – Bell pepper
A – Chook (as in book) U – Chicken
A – Jam U – Jelly
A – Maths U – Math
A – Mum U – Mom
A – Dad U – Pop
Adults only section
A – Rubber U – Eraser
A – Fanny = female genital area U = backside
A – Thong = light rubber footwear U – Skimpy underwear