No, blockchain is not a barbaric word... It is rather a technology.
Blockchain is simply a technology for storing and transmitting information in a secure and above all uncontrolled manner. It is therefore a decentralized technology. It allows to keep track of all data in the form of a chain of blocks. That is to say that there is no intermediary.
It's a bit complicated to explain I admit. But the blockchain has many advantages such as speed, security and gains in productivity and efficiency. It is notably used in the banking and insurance sectors, but also in logistics and food processing. More and more sectors are starting to use this technology. Let's mention the energy, health, real estate, aeronautics and many other sectors...