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
occidental Of or pertaining to the occident or west; of, pertaining to, or characteristic of those countries or parts of the earth which lie to the westward. occidental Specifically [cap. or lowercase] â Pertaining to or characteristic of those countries of Europe defined above as the Occident (see occident, 2), or their civilization and its ...