They also do the doubling for emphasis. I love the “Hati Hati” signs everywhere that tell you to drive extra careful.
Thai and Khmer do the same with tenses and just add tomorrow, yesterday, last year … as context.
One of my favorites in thai is that the common question “gin khaw/กินข้าว” means “Have you eaten?”, “do you want to eat” and “Come eat!” all at the same time and that its also most often meant this way. “Eat rice” in the past, present and future.