Fortunately, native speakers of the English language have an advantage over other world speakers, as English is spoken in most areas of the world. However, contrary to naive belief, English is not a universal language, therefore some basic words will be useful in no matter what situation you find yourself in!
Bus/Train/Metro station or stop
Of course, these few words can only get you so far, but knowing a few of them can possibly make your stay more enjoyable, as you can interact with locals by showing them your interest in their culture. Don’t worry about pronouncing the words with an accent, because, from experience, they will be so flattered that you are making the effort that they won’t mind a mispronounced word here and there. You can also use interactions with locals as a learning experience to learn more words, but most importantly, they can fill you in on the best places to go, eat, visit, and see, throughout your travels.
By having a simple repertoire with common, basic words in the primary language spoken in the country you are visiting, you give off a good first impression with servers, drivers, and vendors, and you can also save yourself from the embarrassment of being just another tourist!