This meaning refers to the entirety of existence, encompassing both the celestial (heaven) and terrestrial (earth) aspects. It can describe the physical universe or metaphorically signify all of nature.

This usage signifies the extremes or opposites in a hierarchical or spatial context, often denoting a range from the highest point to the lowest.

In this context, it refers to deities or spiritual entities associated with the sky and the ground, highlighting their significance in various cultural and religious beliefs.