The word 下雪 (xià xuě), meaning "to snow", is formed through a logical combination of two characters: 下 (xià), which functions as a verb meaning "to fall" or "to descend", and 雪 (xuě), a noun meaning "snow". This creates a classic verb-object compound word, where the action of falling is directly applied to the specific object, snow. The formation is semantically transparent, directly describing the natural phenomenon of snow falling from the sky, and follows a common syntactic pattern in Chinese for creating verbal phrases from simple nouns and directional verbs.