get yourself a good Hebrew/Greek concordanace.
cross ref that word
staff or rod and you will find that the two words along with a few other examples mean one in the same.
rod, staff, stick, etc..........
and my parents did discipline me with a spanking when i needed it.
and as an adult i can look back and say i am glad they loved me enough to correct my behavior.
the bible says anyone who doesn't spank a disobedient child hates his or her child.
"He that spareth his rod HATETH his son; but he that loveth him chasteneth him betimes." Prov 13:24
But these atheist liberal loons will now start calling you a child abuser...