The Chinese word 应急 (yìngjí) is a compound formed through the common morphological process of combining two meaningful characters: 应 (yìng), meaning "to respond" or "to answer", and 急 (jí), meaning "urgent" or "emergency". Together, they create a verb-object structure where the first character denotes the action ("to respond to") and the second character specifies the target ("an urgent situation"), thus forming the complete concept of "to meet an emergency" or "to act in response to an urgent need", which functions as both a verb and an attributive noun (e.g., 应急计划, emergency plan).