1.

Up Here - Thong
Down Under - G String
2.

Up Here - Sidewalk
Down Under - Footpath
3.

Up Here - Backsplash
Down Under - Splashback
4.

Up Here - Hydro Pole
Down Under - Telegraph Pole
5.

Up Here - Drug Store
Down Under - Pharmacy/Chemist
6.

Up Here - Flip Flops
Down Under - Thongs
7.

Up Here - Toque
Down Under - Beanie
8.

Up Here - Trolley/Streetcar
Down Under - Tram
9.

Up Here - Shrimp
Down Under - Prawns
10.

Up Here - Pop/Soda
Down Under - Soft Drinks
11.

Up Here - Trunk
Down Under - Boot
12.

Up Here - Fanny Pack
Down Under - Bum Bag
Mind you, there is no excuse for wearing one...
13.

Up Here - Jello
Down Under - Jelly
14.

Up Here - Tic Tac Toe
Down Under - Noughts & Crosses
15.

Up Here - Sprite
Down Under - Lemonade
16.

Up Here - Napkin
Down Under - Serviette
17.

Up Here - Cookies
Down Under - Biscuits
18.

Up Here - Bell Peppers
Down Under - Capsicum
19.

Up Here - Cantaloupe
Down Under - Rockmelon
20.

Up Here - Hockey
Down Under - Ice Hockey
21.

Up Here - Raisins
Down Under - Sultanas
22.

Up Here - Ketchup
Down Under - Tomato Sauce
23.

Up Here - Espresso
Down Under - Short Black
24.

Up Here - Cooler
Down Under - Esky
25.

Up Here - Fries
Down Under - Chips
26.

Up Here - Sweater
Down Under - Jumper
27.

Up Here - Tractor Trailer
Down Under - Semi Trailer
28.

Up Here - Line
Down Under - Queue
29.

Up Here - Gas Station
Down Under - Petrol Station
30.

Up Here - Eraser
Down Under - Rubber
31.

Up Here - Washroom
Down Under - Bathroom/Toilets
32.

Up Here - Mailman
Down Under - Postman
33.

Up Here - Scotch Tape
Down Under - Sticky Tape
34.

Up Here - Entree
Down Under - Main Meal
35.

Up Here - Comforter
Down Under - Doona
36.

Up here - Diaper
Down Under - Nappy
37.

Up Here - Slots
Down Under - Poker Machines
38.

Up Here - Pass
Down Under - Overtake
39.

Up Here - Elevators
Down Under - Lifts
40.
So there you go. While not an exhaustive list this will help you get by. Travel safe globetrotters.