Byzantine Fault Tolerance (BFT)
Byzantine failure is when a system loses service due to a Byzantine Fault. Thus, BFT defines the level of immunity of a certain system from those Byzantine faults.
Proof of Stake (PoS)
An alternative to PoW, PoS puts dependency on the amount of resources that someone holds.
Proof of Work (PoW)
A piece of data which is difficult to produce but easy to verify. Producing PoW is a random process, and requires a lot of trial and error.
Software for securely and consistently replicating an application on multiple machines. To learn more about Tendermint, click here.