Nickola

Example:Some friends of Nickola called him simply 'Nick'.

Definition:A shorter, less formal form of a person's name, often used as a nickname or pet name.

Example:Nickola's friends gave him a playful nickname he affectionately came to embrace.

Definition:A familiar and often affectionate or familiar name given to a person or thing, that differs from the proper name, not usually replacing it, but filling the additional function of a sign of endearment or familiarity.