Great Wall of China vs wall

Great Wall of China and wall both are nouns.

Word	Noun	Adjective	Verb	Adverb
Great Wall of China	Yes	No	No	No
wall	Yes	No	Yes	No

Great Wall of China (noun)	wall (noun)
a fortification 1,500 miles long built across northern China in the 3rd century BC; it averages 6 meters in width	an architectural partition with a height and length greater than its thickness; used to divide or enclose an area or to support another structure
	an embankment built around a space for defensive purposes
	a masonry fence (as around an estate or garden)
	a layer of material that encloses space
	(anatomy) a layer (a lining or membrane) that encloses a structure
	anything that suggests a wall in structure or function or effect
	a vertical (or almost vertical) smooth rock face (as of a cave or mountain)
	a difficult or awkward situation

Great Wall of China (verb)	wall (verb)
	surround with a wall in order to fortify