Chaos: Meaning and History | Merriam-Webster
www.merriam-webster.com › words-at-play › chaosThe English word chaos is borrowed from the Greek word that means "abyss." In ancient Greece, Chaos was originally thought of as the abyss or emptiness that existed before things came into being, and then the word chaos was used to refer to a specific abyss: the abyss of Tartarus, the underworld. When the word chaos first came into English in the 1400s, this sense was the one that was first attested to.
Chao (surname) - Wikipedia
https://en.wikipedia.org/wiki/Chao_(surname)In the Third National Population Census of the People's Republic of China in 1982, Cháo meaning "dawn" (晁) was found to be the 361st-most-common surname, while Cháo meaning "nest" (巢) was 420th-most-common. Zhào (赵; 趙) was the seventh-most-common surname, but it is not spelled Chao in mainland China. In Taiwan, where that latter surname frequently is spelled Chao, it was the 43rd-most-common surname in 2005, according to a survey of household registration …