The earth is a planet. The Earth is a sphere, and it revolves around the sun. A star is a luminous celestial body that has a spherical shape. It is made up of plasma, hydrogen, helium, etc.

Wireless LAN (WLAN) stands for Wireless Local Area Network. It is refers to a network that connects two or more devices by using wireless data connections over short distances. Bluetooth is a short range...

Both qHD and HD are formats used to display high quality images on an HD enabled screen. However, both these formats differ in their resolutions and coverage of devices.

qHD stands for quarter high definition, and is one fourth of full high definition, or full HD, hence the name qHD. Both these resolutions differ in terms of their measurement as well.

Aikido is a Japanese form of self-defense and martial art forms, whereas Tai Chi is a Chinese form of self-meditative exercise and martial art.