Adrianople vs Adrianopolis

Adrianople and Adrianopolis both are nouns.

Word	Noun	Adjective	Verb	Adverb
Adrianople	Yes	No	No	No
Adrianopolis	Yes	No	No	No

As nouns, Adrianople and Adrianopolis are synonyms defined as:

Adrianople and Adrianopolis: a city in northwestern Turkey; a Thracian town that was rebuilt and renamed by the Roman Emperor Hadrian

Other synonyms of Adrianople include Edirne.

Adrianople (noun)	Adrianopolis (noun)
a city in northwestern Turkey; a Thracian town that was rebuilt and renamed by the Roman Emperor Hadrian	a city in northwestern Turkey; a Thracian town that was rebuilt and renamed by the Roman Emperor Hadrian