Word: Diatribe (noun)
Definition: A bitter and abusive speech or piece of writing
Source: https://www.merriam-webster.com/dictionary/diatribe
Encounter: “A literary visitor strolls in from the Airport” (1st Paragraph). “is about a London cabdriver who inadvertently founds a religion when a ranting diatribe he buries in the garden of his ex wife is dug up five centuries later”
Comprehension: I now understand because in the reading the word diatribe discusses the abusive speech within the writting while also an extra character is mentioned.