Collocations for era - noun

golden, great
the golden era of radio

new
different
present
modern
bygone, earlier, past, previous
The room had the elegance of a bygone era.

antebellum (AmE), pre-war
post-war
apartheid, civil rights, colonial, post-imperial
Communist, Nazi, Soviet, etc.
dotcom
Clinton, Thatcher, etc.
Edwardian, Napoleonic, Victorian, etc.
Baroque, Classical, Romantic, etc.
Christian, Common
the early centuries of the Christian Era

silent
movies of the silent era

herald, mark, usher in
The fall of the Berlin Wall ushered in a whole new era.

enter, move into
The country has entered an era of high unemployment.

characterize, define

begin
end

during an/the era, in an/the era
We live in an era of religious uncertainty.

into era
a practice that has survived into the present era

era in
a new era in the history of art

the beginning of an era, the dawn of an era, the dawning of an era
It feels like the dawning of a new era

be on the threshold of a new era
the end of an era