As in the discrete case, the terms have standard names.
There is no standard modern name of the ridge.
Originally this was the standard name used across Australia.
In the Middle Ages it became the standard name used of his work.
The station signs are in the standard black name plates with white lettering.
There is no standard name or definition for the concept.
However, the standard English name for the currency is hryvnia.
Relations having certain combinations of the above properties have standard names.
Here "canonical" usually means: a more generally accepted or standard name.
Most standard European names have equivalents, as do many major cities and all nations.