Peercoin (formerly PPCoin) is an altcoin that was one of the first to combine the Proof-of-Stake and Proof-of-Work mechanisms.

Peer-to-peer (P2P, "equal to equal") is a model of decentralized interaction in which network participants exchange data and value directly, without a mandatory intermediary.

A peak is the maximum price of an asset reached over a certain period of time, after which a decline in quotes usually begins. The term is widely used in technical analysis.

"Feathers" is a colloquial name for the cryptocurrency Feathercoin, one of the early alternative coins (altcoins), based on the Scrypt hashing algorithm.

Pending is the status of a payment or transaction that has been sent but not yet confirmed by the network or the payment system. The funds are, as it were, stuck in an intermediate state and awaiting a final decision.