diff --git a/docs/misc/glossary.md b/docs/misc/glossary.md
index 00e3b77630..8dad0f1543 100644
--- a/docs/misc/glossary.md
+++ b/docs/misc/glossary.md
@@ -37,6 +37,10 @@ A node that is responsible for generating and propagating blocks, and for reachi
 The public mainnet of the Klaytn platform. It is the production environment for Klaytn applications and services. 
 
 See also Klaytn Testnet [Baobab](#baobab).
+### dApp (Decentralized Application)
+
+An application that runs on a decentralized network like blockchain,  independent of a single server controlled by a company. dApps are potentially more secure, transparent, and resistant to censorship.
+
 
 ### endpoint node (EN)
 
@@ -103,6 +107,11 @@ A virtual state machine that executes Klaytn smart contracts. It is a quasi-Turi
 
 A unique resource identifier scheme to identify a Klaytn node. It consists of nodeID, hostname, port, and discport.
 
+### JSON-RPC APIs
+
+A communication method that uses JSON (a data format) to send requests and receive responses. It allows developer tools and applications to interact with the Klaytn network, read data, or send transactions.  Imagine JSON-RPC APIs as a remote control with buttons for specific actions on the Klaytn network (the machine).
+
+
 ### proposer
 
 A role assigned to a consensus node (CN) in each round of block creation. The proposer is randomly but deterministically selected to create the next block. The probability of a CN being enlisted as the proposer is determined by the amount of Klaytn tokens, or KLAY, that the CN stakes.
@@ -155,4 +164,4 @@ A critical component for managing pending and queued transactions awaiting inclu
 
 ### validator
 
-A node that verifies the accuracy of data contained in new blocks and ensures that blocks are processed efficiently across the network. In Klaytn's permissionless validation structure, anyone can act as a block validator if they meet certain qualifications while maintaining the existing Governance Council structure and roles.
\ No newline at end of file
+A node that verifies the accuracy of data contained in new blocks and ensures that blocks are processed efficiently across the network. In Klaytn's permissionless validation structure, anyone can act as a block validator if they meet certain qualifications while maintaining the existing Governance Council structure and roles.