Input (grade 13): Penance and repentance, similar in their derivation and original sense, have come to symbolize conflicting views of the essence of repentance, arising from the controversy as to the respective merits of "faith" and "good works."
Output (grade 7): Penance and repentance were similar in their original sense. After the controversy about the merits of "faith" and "good works" they are seen as conflicting views.