The fundamental difference between Blockchain and Cryptocurrencies has to do with how
distributed ledger technology is used.......

BLOCKCHAIN AS A TECHNOLOGY

A blockchain is a distributed ledger technology that forms a “chain of blocks.” Each block includes information
and data that are bundled together and verified. These blocks are then validated and strung onto the chain of
transactions and information in previous blocks. These blocks of transactions are permanently recorded in the
"distributed ledger" that is the blockchain. Learn more about blockchain technology here.

CRYPTOCURRENCY AS AN ASSET CLASS

Contrasted with blockchain, cryptocurrency has to do with the use of tokens based on the "distributed ledger
technology". Cryptocurrency can be seen as a tool or resource on a blockchain network. Anything dealing with
buying, selling, investing, trading, microtipping, or other monetary aspects deals with a blockchain native token
or subtoken.
It is a token based on the distributed ledger that is a blockchain. Cryptocurrency is a digital currency formed on
the basis of cryptography, or by definition, “the art of solving or writing codes.” Although all are considered
cryptocurrencies, these tokens can serve different purposes on these networks.
Referring to the token as the technology can be right in the case of...  Bitcoin, but is very different when dealing with
other blockchain projects like Ethereum. In this case, the technology is known as Ethereum, but the native token
is Ether, ... and transactions are paid in "gas"   (graduated accessed service tax on transactions - complicated).