Bitcoin is the most well-known cryptocurrency, and it was for it that blockchain technology was invented. Cryptocurrency, on the other hand, is a virtual digital currency that does not have any physical form. It operates on a decentralised control system with no central banking systems.
Not all virtual encrypted currency is decentralised. Some are programmed to self destruct if they leave the video game or casino that paid for their creation. Like I said up ^^^ there somewhere, Bitcoin is functional as internet currency because it is decentralised. All cryptographically protected virtual currencies can be dubbed 'cryptocurrency' but Bitcoin, while not the first version of virtual money, is the first to have cracked it so people rightly set it apart from altcoins (or shitcoins). The media likes to try & rubbish BTC by associating it with the less successful wider crypto market, so counter culture be all casual about like 'fuck crypto this is Bitcoin' to emphasise its standout importance. Technical definitions & different voices with their agendas & subtexts can be confusing sometimes but we can get our heads round it with a little discipline
