Gray or Grey: Which is The Right Word? Dictionary.com
https://www.dictionary.com:443/e/gray-vs-grey/
WEBJune 10, 2019. Grey and gray are both accepted in the English language. They refer to a color of a neutral tone between black and white, and can also be used metaphorically to convey gloom and dullness. However, gray is the more popular spelling in the US, while grey reigns supreme in the UK as well as Ireland, Australia, and other places that ...
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