clothing: an article of clothing worn on the body, or a covering pictured as one
This is a general word for what a person wears. It does not name a particular item like a robe, a tunic, or a cloak, and it does not carry a built-in social level: the same word covers the rags of the poor who freeze without it, the fine gold-worked dress of a princess, and the royal apparel the Persian king puts on. Context, not the word itself, tells you how grand the clothing is.
Because the word is tied to the idea of being clothed and covered, biblical poetry stretches it beyond human dress. The sky can be spoken of as a garment that wears out, the storm cloud as the swaddling of the newborn sea, the ocean deep as a garment thrown over the earth at creation. In these images the thing being described is not really clothing at all, but the writer covers it the way a garment covers a body.
The two uses are the same idea seen from two angles: first the literal clothing people put on, then that picture borrowed to describe how something is wrapped, covered, or draped. Nothing in the range is obscure, and translators reach for it easily with common English words for dress.