dial telephone vs telephone set

dial telephone and telephone set both are nouns.

Word	Noun	Adjective	Verb	Adverb
dial telephone	Yes	No	No	No
telephone set	Yes	No	No	No

As nouns, telephone set is a hypernym of dial telephone; that is, telephone set is a word with a broader meaning than dial telephone:

dial telephone: a telephone with a dial for registering the number to be called
telephone set: electronic equipment that converts sound into electrical signals that can be transmitted over distances and then converts received signals back into sounds

Other hypernyms of dial telephone include phone, telephone.

dial telephone (noun)	telephone set (noun)
a telephone with a dial for registering the number to be called	electronic equipment that converts sound into electrical signals that can be transmitted over distances and then converts received signals back into sounds