Simplify the concept with a basic sentence

I think we are over-complicated some concepts in web3 and crypto.

If we can simplify it with one or two sentences, it will really easy for users to understand it
For eg:

ETH - a currency for paying transactions in the Etherium network
Blockchain platform (Etherium, solan, near,...) is like the cellular network provider. If we need to use service on that network, we need to switch our phone to their bandwidth