"The Mare in the moon. Myth from olden pony times."
Could you tell me the reason why myth is uncountable in the sentence? Obviously, the myth in there isn't the concept of myth but a concrete and individual object. Thanks in advance!
Twilight Sparkle is looking a phrase up in 'Mare in the Moon' in a reference book, Predictions and Prophecies. Like a dictionary, this book does not bother with articles.