Darknet is a popular culture term for the portion of the web that is hidden from search engines. Accordingly, finding a website on the darknet usually requires someone sharing the address with a user. In addition, browsing the darknet requires using one of a few specialized web browsers like TOR, I2P or Freenet.
Dark web is a synonmym for Darknet.
Information about Darknet Markets is included in the CryptoMarketsWiki entry for cryptocurrency.
- What is the Darknet?. Technopedia.