Nook

Initially released in 2009, Nook is a brand of touch-screen e-reader devices sold by the Barnes & Noble book store. They have a range of devices, from simple black-and-white displays for books to Android-based tablets that play games, watch videos and movies, or browse the Internet. Recent Nook models are more minimalistic and reading-focused, featuring blue light friendly E ink screens, light and waterproof designs, and long battery life for continuous, all-day reading.

In addition to physical Nook devices, NOOK is also a free app available on iOS and Android devices. The app allows users to purchase and read e-books stored on their Barnes & Noble account. You can continue reading books from the same page you left off on your physical Nook device or another Nook platform signed into the same account. They also offer audiobook services through their app, NOOK Audiobooks.

Hardware terms, Kindle