The shiny precious metal that's used for jewelry, spoons and forks, and fancy candlesticks is silver. You can also use the word silver to describe things that are the same color as silver.
There are silver bracelets and silver coins, but also silver hair and a silver sky. The element known to scientists as Ag, or silver, is rare and valuable, and was once used to make money. Today many coins are silver in color, but they're usually made of nickel and copper. If you believe that every terrible event has a hopeful or encouraging aspect to it, you might say, "Every cloud has a silver lining."