Commons:Image sets/vague sets

example
What the photos in these series have in common is rather too vague to make them image sets in the sense described here.
Ginkgo biloba (Ginkgo) Interior of Theatre Graslin
Jewish cemetery Heiliger Sand in Worms Nelumbo nucifera (Indian Lotus)
These brick stamps are almost not a set. Only the shared image proportions make it one. The two Bassae Frieze sets below would be too vague without their characteristic sepia tones. These portaits on bank notes are very vague, but they are cropped in a similar way.