Núi
Núi is the Vietnamese word for mountain; the country's mountain-spirit tradition centers on documented figures like Sơn Tinh, the Mountain Lord, one of Vietnam's Four Immortals, who battled Thủy Tinh, the Water Lord, for Princess Mỵ Nương. The recorded peak-guardian—a towering figure, part of the mountain itself—echoes this tradition, though 'Núi' is a common noun, not a named spirit.