It is a verb or noun, depending on the specific usage.
Example of "prey" used as a verb:
"The hawks prey upon the squirrels."
Example of "prey" used as a noun:
"Squirrels are the prey of hawks."
The part of speech for "answer" is a noun.
part of speech
The part of speech for this particular word is a noun.
what part of speech is beneath
adverb
what part of speech is work
The part of speech for "explicit" is an adjective.
The part of speech for "unfamiliar" is an adjective.
The part of speech for "twirl" is a verb.
The part of speech of "came" is a verb.
The part of speech for "indefinite" is an adjective.
The word speech is a noun.