Greco-Roman architecture vs Graeco-Roman architecture

Greco-Roman architecture and Graeco-Roman architecture both are nouns.

Word	Noun	Adjective	Verb	Adverb
Greco-Roman architecture	Yes	No	No	No
Graeco-Roman architecture	Yes	No	No	No

As nouns, Greco-Roman architecture and Graeco-Roman architecture are synonyms defined as:

Greco-Roman architecture and Graeco-Roman architecture: architecture influenced by the ancient Greeks or Romans

Other synonyms of Greco-Roman architecture include classical architecture.

Greco-Roman architecture (noun)	Graeco-Roman architecture (noun)
architecture influenced by the ancient Greeks or Romans	architecture influenced by the ancient Greeks or Romans