Greetings from MIssissippi. Since I had Louw & Nida's Greek-English
Lexicon of the New Testament Based on Semantic Domains open to look up
SARX I also checked these two words. You asked:
> Is there any difference between FAULOS & PONHROS semantically or are
> they used synonymously throughout our literature?
They list one meaning for FAULOS.
88.116 FAULOS, H, ON: pertaining to being evil in the sense of moral
baseness - 'mean, bad, evil.'
However, they list four different meanings from PONHROS - wicked
(88.110), worthless (65.27), guilty (88.314) and be sick (23.149).
88.110 is the closest to FAULOS.
88.110 PONHROS, A, ON: pertaining to being morally corrupt and evil -
'immoral, evil, wicked.'
Following Louw and Nida, it would appear then that FAULOS is a near
synonym to one meaning/use of PONHROS.
Harry J. Harm -
translation consultant to the Choctaw Bible Translation Committee