Description: Informally, people use the word 'ghoul' to mean 'zombie', and vice versa - however, a particular kind of zombie is the one that has been given that designation by those who are seeking to understand and classify the various vectors of the dead. It is a hunched, broken looking creature that can move only in a loping, lurching gait. Its head constantly bobs up and down, like that of an indifferent woodpecker, as it goes around its dark business.
Consider: The putrid ghoul looks to be somewhat on the frail side. The putrid ghoul is rated as a quite unskilled zombie.