The Water Scarcity Atlas provides a glossary of terms related to water scarcity, including definitions of key concepts and technical terms.

Water scarcity: The glossary defines water scarcity as "the lack of sufficient available water resources to meet the demands of water usage within a region." The glossary notes that water scarcity can be caused by a variety of factors, including climate change, population growth, and poor water management practices.

Water stress: The glossary defines water stress as "the condition that occurs when the demand for water exceeds the available amount during a certain period or when poor quality restricts its use." The glossary notes that water stress can lead to a range of negative impacts, including reduced agricultural productivity, increased conflicts over water resources, and compromised human health.