What is an adjective of origin?

An adjective of origin describes where something comes from or originates.

Here are some examples:

* English tea (origin: England)

* Italian pasta (origin: Italy)

* American football (origin: America)

* Victorian architecture (origin: the Victorian era)

* Lunar surface (origin: the moon)

* Alpine flowers (origin: the Alps)

These adjectives often use the name of a country, region, time period, or other source.