How to Identify Epimers and Anomers in Carbohydrates (Sugars)?

Stereoisomers are a kind of isomerism that occurs when atoms or functional groups that belong to the same atom are arranged in space in a manner that is unlike one another. 

Isomers of this kind have the same structural make-up but have distinct atomic configurations at their geometric centers. Enantiomers and diastereomers are the two primary categories that may be used to describe stereoisomers in a general sense.

Enantiomers contain mirror images and chiral centers that are not superimposable.

Diastereomers include non-superimposable chiral centers but are not mirror images. There might be significantly more than 2 stereocenters, depending on their number.