This document contains definitions and explanations of various terminology related to climate change. It defines key terms like climate, weather, UNFCCC, GHGs, adaptation, mitigation, COP, IPCC, Kyoto Protocol, CDM, NAPA, vulnerability, REDD, REDD+, PES, carbon market, carbon sequestration, carbon accounting, and more. It provides the meanings of these technical terms concisely in Nepali.