No other language contains a word that can be translated only as 'fair'

In the 2000s, capuchin monkeys proved they recognised the concept of fairness in an experiment where they were given treats, some they liked and some they didn't, for performing tasks. https://www.dailymail.co.uk/home/books/article-9450869/No-language-contains-word-translated-fair.html?ns_mchannel=rss&ns_campaign=1490&ito=1490