Are there universal words, and what are they? - Feddit

Related to the question about whether facial expressions are universal. Are there words/verbal expressions/sounds that exist in every language and have the same meaning in every language? (I’d also count words that are very similar.) One example, that I believe is universal is M followed by a vowel followed by another M and optionally another vowel, meaning “Mother”. At least in any language I know, this seems to hold true (mom, Mama, mamma, Mami, …). Any other examples?