Distant languages have similar sounds for common words
There are several theories. One is that some objects have names whose sounds bring them to mind, a sort of “sound symbolism”. Employing a nasal “n” sound to name a nose would be one example. Another is that sensory associations play a role. Studies have found that people routinely associate darker colours with lower sounds and lighter colours with higher ones, for instance. Such shared synaesthesia might account for some of the similarities. Or the commonalities might be leftovers from some ancient, now-forgotten proto-language.