Aurora is a noun.
determiner
The Aurora Borealis and its southern counterpart the Aurora Australis are formed high in the atmosphere in the ionosphere, which is sometimes considered as part of the thermosphere, the outermost actual atmosphere. Above this layer, the exosphere has so few molecules that they can escape into space.(see the related question below)
Aurora is described as aurora borealis in the northern hemisphere. In southern hemisphere aurora is describes as aurora australis .
The aurora boealis is in the northern hemisphere, the aurora austealis is in the southern hemisphere.
Charged particles from the Sun striking the upper atmosphere.
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
Aurora is the Latin word for "dawn." It isn't a Greek word.
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.
The part of speech for "explicit" is an adjective.
The part of speech for "indefinite" is an adjective.
The part of speech for "lecturer" is a noun.