yuān​yāng

affectionate couple

鸳鸯 (鴛鴦) yuān​yāng
affectionate couple noun
a devoted or happily married couple, used metaphorically based on the birds' reputation for pairing for life

The two of them are recognized by the neighbors as a devoted couple.

mandarin duck noun
a colorful bird species native to East Asia, Aix galericulata, often symbolizing marital fidelity

A few mandarin ducks are swimming on the lake.

Frequency

Movie subtitles
1.46 per million appears in 1% of films
Written text
3.69 per million

Sources

Definitions
CC-CEDICT