1. A genre of ritual water song from San Pedro de Casta. Sometimes spelled hualina, the term derives from warina, a reference to the ancient Wari civilization that built Casta's irrigation system.
2. An acequia is a ditch or canal that forms part of Casta's irrigation system and water cycle. From Cunya comes the water that flows into Carhuayumac, Casta's principal canal. From there the water is diverted into a series of reservoirs or lakes called cochas and canals called acequias, gradually flowing down the hills into Casta’s many thirsty fields.