fishing pole vs fly rod

fishing pole and fly rod both are nouns.

Word	Noun	Adjective	Verb	Adverb
fishing pole	Yes	No	No	No
fly rod	Yes	No	No	No

As nouns, fly rod is a hyponym of fishing pole; that is, fly rod is a word with a more specific, narrower meaning than fishing pole:

fishing pole: a rod of wood or steel or fiberglass that is used in fishing to extend the fishing line
fly rod: a long flexible fishing rod used in fly fishing

Other hyponyms of fishing pole include spinning rod.

fishing pole (noun)	fly rod (noun)
a rod of wood or steel or fiberglass that is used in fishing to extend the fishing line	a long flexible fishing rod used in fly fishing