No, it's not. Bitcoin and Blockchain are two different entities.

To further explain, blockchain is an idea of having decentralized nodes (computers) connected together with P2P (peer-to-peer), with each node having a copy of the blockchain. The blockchain mentioned here is an encrypted series of blocks, with each block pointing to the next one, with stored data (of any kind you want to) in a block. Those nodes are the ones who create each block, requires great computing power since blockchain uses high cryptography that requires fast computations.

Bitcoin, on the other hand, is more of like a currency that is built around the blockchain technology. These makes each transaction of Bitcoin untraceable, anonimous, but irreversible. This is because when even a single bit of data is modified inside a block, its pointer to the next would change and all succeeding blocks of the chain should be modified to match the encryption pattern. On top of that, more than half of the nodes should agree that a modified block is good enough to their standards, or else it would be rejected. That's why the blockchain technology is reliable in handling sensitive transactions such as money.