telegraph pole vs telephone pole

telegraph pole and telephone pole both are nouns.

Word	Noun	Adjective	Verb	Adverb
telegraph pole	Yes	No	No	No
telephone pole	Yes	No	No	No

As nouns, telegraph pole and telephone pole are synonyms defined as:

Other synonyms of telegraph pole include telegraph post.

telegraph pole (noun)	telephone pole (noun)
tall pole supporting telephone wires	tall pole supporting telephone wires