DarkWeb - Commonly used term in crypto

You might have listened DarkWeb very commonly in bitcoin industry.. lets understand what is this DarkWeb

The dark web works just about the same as the regular internet: it uses the same TCP/IP framework to transmit HTTP and FTP traffic within and between networks, over the same phone, cable or FiOS lines that carry regular internet traffic. Content on the dark web consists of HTML webpages and their assets, just like it does on the rest of the web. In fact, under the hood, the dark web is the same as the regular web, with two important exceptions that also distinguish the dark web from the deep web.

First: the dark web isn’t indexed by search engines. Second, content on the dark web can’t be accessed with regular web browsing software alone; additional software is required to make the networks talk to one another.