Sky is a noun. It can be use as a subject.
determiner
it could be referring to the color or like when a tornado is coming and the sky is a bright orange.
A sky metaphor is a figure of speech that compares something to aspects of the sky, such as clouds, the sun, or the stars, to convey a particular meaning or emotion. It is often used to describe vastness, beauty, clarity, or mystery in a poetic or expressive way.
The sun is in the eastern part of the sky in the morning as it rises in the east and sets in the west.
condensation
Rainstorm is a noun. Nouns are people, places, and things.
The word lightning is a noun. It is a flash of light in the sky produced by electricity within a cloud.
The word rainbow is a noun. A rainbow is a multicoloured arch that appears in the sky.
metaphor
The part of speech for this particular word is a noun.
part of speech
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
The part of speech for "unfamiliar" is an adjective.
The part of speech of "came" is a verb.
The part of speech for "twirl" is a verb.