How do anomers differ from epimers?

Explanation

Carbohydrates which differ in configuration at the glycosidic carbon (i.e.,`C_1` in aldoses and `C_2` in ketoses) are called anomers while those which differ in configuration at any carbon other than glycosidic carbon are called epimers. For example , `alpha`-D- glucose and `beta`-D-glucose are anomers since they differ in configuration at `C_1` (glycosidic carbon) while glucose and mannose are called epimers since they differ in configuration at `C_2` (other than the glycosidic carbon `C_1`). In other words, glucose and manose are `C_2` -epimers. Similarly , we can show that glucose and galactose are `C_4` -epimers since they differ in configuration only at `C_4`.