Glossary

Term	Description
BApp	Blockchain application
Block reward	Newly issued KLAY and the sum of transaction fees used in the block
Bootnode	Bootnodes that helps PNs and ENs to register themselves in the network and to discover other nodes to connect to.
caver-js	caver-js is a JavaScript API library that allows developers to interact with a Klaytn node.
caver-java	caver-java is a Java API library that allows developers to interact with a Klaytn node.
CC	Core Cell. Core Cell plays a role of generating blocks in the Klaytn blockchain network.
CCN	Core Cell Network. The network consists of Core Cells (CCs) that verify and execute submitted transactions. CCN is also responsible for the creation and propagation of blocks with the transactions.
CN	Klaytn Consensus Node. A node which creates a new block with other CN participants of the Core Cell Network. Details at Core Cell
CNN	Consensus Node Network. CNN is a full-mesh network of CNs.
Committee	A group of selected consensus nodes participating in Byzantine fault-tolerant (BFT) consensus. Committee consists of a proposer and validators.
Council	All consensus nodes which can be a member of committee
EN	Endpoint Node. Endpoint Nodes play a role of an endpoint of the blockchain network to handle RPC API requests.
ENN	Endpoint Node Network. The network consists of the Endpoint Nodes (ENs), which mainly create transactions, handle RPC API requests, or process the data from service chains.
EOA	Externally Owned Account. See Klaytn Account Types
Full node	A node containing all the blocks generated from a blockchain
KGF	Klaytn Growth Fund. See Token Economy - Klaytn Growth Fund.
KIR	Klaytn Improvement Reserve. See Token Economy - Klaytn Improvement Reserve.
KLAY	KLAY is the main internal transferable cryptocurrency of Klaytn and is used to pay transaction fees when creating or executing smart contracts or when transferring KLAY. Also currency unit of KLAY and 1 KLAY is 10^18 peb.
KLVM	Klaytn Virtual Machine
peb	The smallest currency unit of KLAY. See Unit of KLAY.
PN	Klaytn Proxy Node. A node which submits transactions received from the Klaytn Endpoint Node Network to a CN or CNs. Details at Core Cell
PNN	Proxy Node Network. PNN is the network consisting of PNs in CCN.
Proposer	A consensus node proposing a new block
Proposer reward	Amount of KLAY which a proposer receives from block reward
SCN	Service Chain Network. This network is an auxiliary blockchain network specialized for the services that require higher performance, different node configurations, or security levels compared to the main chain. Details at SCN Operation Guide
Service Chain	A service-provider-owned blockchain capable of running more than one blockchain-based service
Unit price	A fixed price of gas maintained by Klaytn. Details at Unit Price.
Validator	A consensus node validating a new block proposed by a proposer
Validator reward	Total amount of KLAY that validators receive from block reward