all the answers you received are wrong or incomplete
Holochain
- a framework to build dapps (doesn't have a token)
- it's an analog to blockchain in a way
These apps built on Holochain are only P2P and there's no way to access them through a regular browser.
Holo is the flagship dapp built on Holochain. Its purpose is to provide hosting for these holochain apps so normies can access them through Chrome, Mozilla, etc. The creators of these apps must pay for hosting on the Holo platform in the same way that you today you pay to host your website. The token that is used to pay for the hosting is Holofuel. This token is special because it actually buys you computational power in the network. Hosts set how much holofuel they want to charge per computational unit. This means that due to the free market economics, it's a race to the bottom where hosts provide cheaper and cheaper hosting. That means 1 holofuel can buy you more computational power which makes it more valuable over time. The more computational power there is in the network and more competition, the more valuable 1 holofuel is.
HOT (holotoken) is just a placeholder for Holofuel. You will be able to swap them when the network is operational.
TL/DR:
Holochain - blockchain
Holo - Bitcoin (the protocol)
Holofuel - Bitcoin (the currency)