An area or object within a thermal image that is different than what is expected and which cannot be explained by normal visual, environmental, or historical information.

A small piece of excess clay (or slip) on the surface of the pottery that has been fired and then painted over usually. Not uncommon and not a major fault unless its detracts very visually from the piece.

a malformation or abnormality in any part of the body

Something that doesn't fit science or the conventional view of reality.

A significant difference or deviation from what is standard or common.