golden section vs golden mean

golden section and golden mean both are nouns.

Word	Noun	Adjective	Verb	Adverb
golden section	Yes	No	No	No
golden mean	Yes	No	No	No

As nouns, golden section and golden mean are synonyms defined as:

golden section and golden mean: the proportional relation between two divisions of line or two dimension of a plane figure such that short : long :: long : (short + long)

golden section (noun)	golden mean (noun)
the proportional relation between two divisions of line or two dimension of a plane figure such that short : long :: long : (short + long)	the middle between extremes
	the proportional relation between two divisions of line or two dimension of a plane figure such that short : long :: long : (short + long)