What is the difference between the two spellings? According to Google Answers, the two words have almost the same meaning in all cases, and g-r-a-y is simply an American derivation of the original spelling g-r-e-y. According to Flak Magazine, the difference can be chalked up to the same happenstances that led to organize/organise and judgement/judgment. Apparently e.e. cummings and Prince are partly to blame as well. However, among the several hypotheses for why gray and grey exist, I believe the following to be the best: Gray is a color. Grey is a *colour*. https://answers.yahoo.com/question/index?qid=20090411185739AAb1hra