Altcoin: Any cryptocurrency other than Bitcoin.
Blockchain: A decentralized, digital ledger that records transactions in a secure and transparent manner.
Exchange: A platform where users can buy, sell, and trade cryptocurrencies.
Fork: A change to the code of a blockchain that results in a split between the old and new versions of the blockchain.
Hash rate: The speed at which a mining computer can solve a hash function in order to verify a transaction.
ICO: Initial Coin Offering, a fundraising method in which a new cryptocurrency project offers its tokens for sale to investors.
Mining: The process of verifying transactions and adding them to the blockchain by solving complex mathematical algorithms using computer hardware.
Private key: A unique code that is used to access and manage a cryptocurrency wallet.
Proof of stake (PoS): A consensus algorithm used by some cryptocurrencies, including Ethereum, that allows holders of the cryptocurrency to validate transactions and earn rewards by staking their coins.
Proof of work (PoW): A consensus algorithm used by some cryptocurrencies, including Bitcoin, that requires miners to solve mathematical puzzles to validate transactions and earn rewards.
Public key: A unique code that is used to receive cryptocurrency in a wallet.
Wallet: A digital storage space for holding cryptocurrency, where you can send, receive, and manage your coins.