Gray vs Grey: What's the Difference?

The answer is simple: gray-colored, not grey-colored. Gray is a color, not a shade of gray.

So, what is the difference between gray and grey? The main difference is that gray is a color, while grey is an adjective used to describe something as dull or lacking in brightness or interest. In other words, grey is a more muted version of gray.

For example, you might say "The sky is a gray color today" (meaning it's a neutral, non-descript shade of blue), but you wouldn't say "The sky is a grey color today" (because grey is not a color). Similarly, you might describe someone's hair as "gray" (meaning it's a natural, mature shade of hair), but you wouldn't describe it as "grey" (because that would imply it's dull or lacking in brightness).

So, to summarize: gray is a color, while grey is an adjective used to describe something as dull or lacking in brightness.