Sentence:  But she is not right to claim this is because "rhetoric" must necessarily be "in the Nietzschean sense that all language is founded in <WSD>tropology</WSD>."37 Since when has <WSD>tropology</WSD> been in conflict with theology? <WSD>Tropology</WSD> and rhetoric thrive in the works of both Calvin and Calvino, and <WSD>tropology</WSD> is the very lifeblood of "The Pilgrim's Progress". 
Meaning of the word marked with <WSD> tags:  The use of a trope (metaphor or figure of speech).