'Ganga Jaal' refers to the holy water of the Ganges river, which is considered sacred in Hinduism. The term 'Jaal' can mean water or essence, and 'Ganga Jal' is commonly used to refer to water from the Ganges, which is used in religious ceremonies. While 'Pani' is the more common Hindi word for water, 'Jaal' is the specific term used in this religious context.