What is in this image? Describe it as if you were explaining it to someone from the 15th century.

This depiction shows a trio of gourds, carved into frightful visages under a night sky adorned with stars and a crescent moon. These are not natural, but have been hollowed and shaped to feature sinister expressions for purposes of celebration or warding off evil spirits. The element termed "Halloween" aligns with traditions of remembering and appeasing the spirits of the departed, akin to practices you might be familiar with concerning All Hallows’ Eve or All Saints'' Day. These gourds, which bear a strong resemblance in form to the melons and pumpkins known in your time, are placed amidst grasses, likely to adorn a gathering or festivity setting. The image is simple and bold, intended perhaps for coloring or decoration.