 It is observed by peoples from all over the world, including Australia, Siberia, Southern India, the Sahara, and the Americas.After a Yolngu man named Bitjingu died, the word "bithiwul" "no; nothing" was avoided.In its place, a synonym or a loanword from another language would be used for a certain period, after which the original word could be used again; but in some cases the replacement word would continue to be used.