Origin: French suffix -age
Golden age has 5 different meanings across 2 categories:
a time period when some activity or skill was at its peak
"it was the golden age of cinema"
any period (sometimes imaginary) of great peace and prosperity and happiness
(classical mythology) the first and best age of the world, a time of ideal happiness, prosperity, and innocence; by extension, any flourishing and outstanding period
A period of happiness, peace, prosperity, and/or great progress.
The oldest and best of the Classical Ages of Man, when people lived innocent lives of happiness and prosperity.