shuāng​miàn

double-sided

双面 (雙面) shuāng​miàn
double-sided adjective
having two sides or functional surfaces; reversible

Please make double-sided copies of these documents.

two-faced adjective
having two different aspects or characters; double-edged or hypocritical

He displays a two-faced personality in front of different people.

Frequency

Movie subtitles
3.70 per million appears in 1% of films
Written text
2.77 per million

Sources

Definitions
CC-CEDICT