1) The Pacific Ocean is the largest ocean on Earth, covering more than 30% of the planet's surface.

2) The name "Bluetooth" comes from the 10th-century Danish king, Harald Bluetooth, who united Denmark and Norway.

3) The word "umbrella" contains three vowels: U, E, and A.

4) The term "bull market" refers to a period of rising stock prices, while a "bear market" refers to a period of falling stock prices.