Difference between “bad” and “poor”
Is there any difference between “bad” and “poor.” I always thought that bad implied a moral tone whereas poor simply implied low quality. Has this ever been true? I now look both words up in the dictionary (AHD and Merriam-Webster) and they are synonyms of one another and carry very similar meanings. Have these two words always been essentially the same in their meaning? Or has popular usage of “bad” made them converge toward one another?