An escrow service is a mediator service that keeps the money for a transaction in safekeeping until the Bitcoins are handed over. Escrow protects from fraudulent sellers.
Bitcoin mining is the backbone of the Bitcoin network. The role of miners is to secure the network and to process every Bitcoin transaction.
Bitcoin Development is free and open-source software that serves as a bitcoin node and provides a bitcoin wallet which fully verifies payments.
A transaction is a transfer of Bitcoin value that is broadcast to the network ledger and collected into blocks that can be viewed with a hex editor
A bitcoin exchange or currency exchange is a digital marketplace where traders can buy and sell bitcoins using different fiat currencies or altcoins.
Individual or groups willing to buy Bitcoin for trade or gain purposes will need a digital wallet to store them for specific period of time, allowing them to profit.