Here is a good word to learn for the Laos traveller: Pharmacy
pharmacy - haankhaayaa - ຮ້ານຂາຍຢາ
haan (ຮ້ານ) is a shop, khaay (ຂາຍ) means to sell, and yaa (ຢາ) is meds.
Unlike in the West, you usually won't need a prescription to buy medication in Laos. And with pharmacists who don't always speak English, unless you know exactly what you're after, you can easily end up with the wrong medication. So be careful!