telephone pole vs telegraph pole

telephone pole and telegraph pole both are nouns.

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

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

Other synonyms of telephone pole include telegraph post.

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