golden mean vs golden section

golden mean and golden section both are nouns.

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

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

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

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