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

Premining (premine) is the mining of part of the coins by a cryptocurrency's creators before its public launch. It can be used transparently to fund the project or serve as a tool for abuse and manipulation.

A block reward is the reward a miner receives for successfully creating a new block in the blockchain. It consists of an issuance part and transaction fees and decreases periodically.

A nonce is a variable number that miners substitute when hashing a block. By going through nonce values, they search for a hash that satisfies the target set by the network's difficulty.

Litecoin is one of the oldest altcoins, created as a faster and lighter alternative to Bitcoin and the originator of the use of the Scrypt algorithm.