Bitcoin is a shared distributed ledger to transfer invisible coins. Anyone can join the ledger by creating a 20 digit coded identity (also known as a “wallet”) and then obtaining coins from some other user in a transaction. Those concepts – the distributed ledger coupled with hash functions- is often called a blockchain or sometimes just a distributed ledger. The first blockchain was built to enable bitcoin, although the blockchain can be so much more.
To illustrate that, we need to see how modern airplanes have become just like iPhones. (Okay, now it seems like you are getting off topic….airplanes? iPhones? Really?)