"Where is the cat?" - What part of speech is the word "where"?
In the sentence, "Where is the cat?", what part of speech is the word "where"?
Solution 1:
"Where" is an adverb telling us 'at what location.'
Solution 2:
Wikipedia uses interrogative word or simply question-word. This word class is not contained in the traditional list of word classes. https://en.m.wikipedia.org/wiki/Interrogative_word