Dardanelles vs Hellespont

Dardanelles and Hellespont both are nouns.

Word	Noun	Adjective	Verb	Adverb
Dardanelles	Yes	No	No	No
Hellespont	Yes	No	No	No

As nouns, Dardanelles and Hellespont are synonyms defined as:

Dardanelles and Hellespont: the strait between the Aegean and the Sea of Marmara that separates European Turkey from Asian Turkey

Other synonyms of Dardanelles include Canakkale Bogazi.

Dardanelles (noun)	Hellespont (noun)
the unsuccessful campaign in World War I (1915) by the English and French to open a passage for aid to Russia; defeated by the Turks	the strait between the Aegean and the Sea of Marmara that separates European Turkey from Asian Turkey
the strait between the Aegean and the Sea of Marmara that separates European Turkey from Asian Turkey