Refers to the metal silver, often in a refined or poetic register. Common in compound words and formal contexts.
白銀の食器が展示されている。
Silver tableware is on display.
silver color; snow (figurative)
Used for the color silver, and figuratively for snow, especially in poetic or literary descriptions of snowy landscapes.
山々は白銀に輝いていた。
The mountains shone in silver (with snow).
silver ratio
Compound of 白 (white) and 銀 (silver). The reading はくぎん uses the on'yomi of both characters.