Pyramids of Egypt vs Great Pyramid of Giza

Pyramids of Egypt and Great Pyramid of Giza both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pyramids of Egypt	Yes	No	No	No
Great Pyramid of Giza	Yes	No	No	No

As nouns, Pyramids of Egypt and Great Pyramid of Giza are synonyms defined as:

Pyramids of Egypt and Great Pyramid of Giza: a massive monument with a square base and four triangular sides; begun by Cheops around 2700 BC as royal tombs in ancient Egypt

Other synonyms of Pyramids of Egypt include Great Pyramid, Pyramid.

Pyramids of Egypt (noun)	Great Pyramid of Giza (noun)
a massive monument with a square base and four triangular sides; begun by Cheops around 2700 BC as royal tombs in ancient Egypt	a massive monument with a square base and four triangular sides; begun by Cheops around 2700 BC as royal tombs in ancient Egypt