The native habitat of the sawtooth oak tree is Japan, Korea, China and the Himalayan Mountain range. The tree was introduced to America in 1862. This oak probably derives its name from the distinctive sawtooth-edged leaves it produces.
Occidental are native people from the western hemisphere (Europe, North America, South America) Oriental are native people from the eastern hemisphere (the countries of Asia), although Oriental is now largely consider an offensive word and the preferred word is Asian. Below is a note from freedictionary.com about why Oriental is offensive
The opposite term  Occident  derives from the Latin word occidens, meaning west (lit. setting occido fall/set). This term meant the west (where the sun sets) but has fallen into disuse in English, in favor of Western world.n German, Orient is usually used synonymously with area between the Near East and India, including Israel, the Arab World, and Greater Persia. The term Asiaten (English: Asians) means the people of East Asia and Southeast Asia.