Is there a difference in hydrocodone apap and hydrocodone acetaminophen?

Both are the same. Apap is paracetamol and same as acetaminophen in usa it is called Acetaminophen brand name(tylenol)in us, canada, japan, south korea, hongkong;iran it is called Acetaminophen and in all other countries it is called paracetamol/apap.
APAP. Apap stands for n-acetyl-p-aminophenol which is another form of Acetaminophen with brand name of paracetamol.