How would you hashtag the Mona Lisa?
You can probably come up with a lot of ideas. Perhaps your list would include: #art, #DaVinci, #smile, #masterpiece, and #Louvre, among others. Conversely, reading a few of those hashtags would make it easy for most literate, English-speaking adults to guess the subject. Those hashtags would never do justice to the picture though, and even poorly painted or photographed images couldn’t be replaced by descriptors.
