Let's first take a look at the names that are used in the heraldic English descriptions for these colors and metals that come mainly from old Norman French words still in use today and include Or (gold), argent (white), azure (blue), gules (red), sable (black), sinople (green), and purpure (purple). Please note that the original names are placed in parentheses for easy reference.
Furs and their variants are regular patterns placed on a shield that are placed and painted to represent real fur. Any charge can have a pattern representative of fur. Along with solid colors, areas of the shield could be filled with repetitive patterns known as furs such as: Ermine (stoat fur) and Vair (grey squirrel fur) both of which have a number of variations.