Explain the difference between back-formation and suffixation.

Explain the difference between back-formation and suffixation.

① BACK-FORMATION IS CONSIDERED TO BE THE OPPOSITE PROCESS OF SUFFIXATION. 

② AS WE KNOW, SUFFIXATION IS THE FORMATION OF NEW WORDS BY ADDING SUFFIXES TO BASES, AND BACK-FORMATION IS THEREFORE THE METHOD OF CREATING WORDS BY REMOVING THE SUPPOSED SUFFIXES.
③ THIS IS BECAUSE MANY OF THE REMOVED SUFFIXES ARE NOT TRUE SUFFIXES BUT INSEPARABLE PARTS OF THE WORDS.