Elsewhere is an adverb.
Another is a determiner.
The word otherwise is an adverb. It means to do something in a manner that is different.
I cannot think of any way the word 'everywhere' could be used other than as an adverb.
The word in is sometimes used as a noun, in the context of, I've got an in with the president. This would be considered a colloquial usage.
The part of speech for this particular word is a noun.
part of speech
The part of speech for "answer" is a noun.
what part of speech is beneath
adverb
starting it pretty much.
The part of speech for "explicit" is an adjective.
The part of speech for "lecturer" is a noun.
The part of speech for "rapid" is an adjective.
The part of speech of "came" is a verb.
The part of speech for "breezy" is an adjective.
The part of speech for "buried" is a verb.