Köben

Etymology
Shortening of.

Usage notes
This form is extremely common in colloquial speech; for many speakers it is more common than the full name. "Kóngsins Köben" is also a term that is commonly seen, but it is much more jocular; it refers to Copenhagen being the residence of Iceland's former king. The Icelandic usage of "Köben" is considered extremely silly by Danish people, while it is a neutral term in Iceland.