The correct response is:
A phrase has either a noun or a verb, but a dependent clause has both.
Explanation: A dependent clause contains both a subject (which is usually a noun) and a verb, but it cannot stand alone as a complete sentence. A phrase, on the other hand, may consist of just a noun (noun phrase) or just a verb (verb phrase) but does not contain both the subject and verb together in a way that forms a clause.