Other criteria such as rigidity or contiguousness are sometimes also applied, so large clusters of associated smaller structures may or may not qualify.

Because of its contiguousness with Terrace along the Highway 16 corridor, many visitors and newcomers to the area consider Thornhill a part of Terrace.

Various distinctions among techniques are applied, based on criteria including spectral range, spectral resolution, number of bands, width and contiguousness of bands, and application.

A list of Cornish saints recently studied in an early tenth-century manuscript, where in several cases the saints are listed according to geographical contiguousness of parochial dedications, suggests that the parochial structure of Cornwall, as we know it today, was already in existence at that time.