Yes, technically speaking #bitcoin is a cryptocurrency. In fact BTC was the original ‘crypto.’
But today be aware there is a significant difference between BTC and the thousands of ‘crypto’ tokens that have arisen in Bitcoin’s wake.
Bitcoin is the most decentralized money. There is no company, no account to sign up for, no single point of failure. On the other hand most ‘cryptos’ are funded by VCs, have a company promoting them, run on centralized servers.
Bitcoin is the digital perfection of money.