Are security tokens cryptocurrencies?

Not quite...

Cryptocurrency, like Bitcoin (BTC), Ether (ETH) or Tether (USDt), is a completely decentralised digital currency built from virtual blockchains (digital transaction ledgers) spread over a web of computers within a specific network. Cryptocurrency nowadays can be used as a means to buy things ranging from coffee to houses and are valued purely by the peer-to-peer trading that happens on a near constant basis over its network. Think of it as modern digital cash used to buy goods and services.

Security tokens are essentially digital contracts representing ownership rights of assets that already hold value, e.g. music rights, real estate or company stocks. Security tokens are created by STO platforms like STOKR and are built onto the blockchain that cryptocurrencies are created from. They are regulated and more complex when it comes to lawfully issuing them to users. This regulation, however, makes them safer and can protect the user against any ill-willed entities looking to scam or make a quick buck.