Geoffrey Chaucer's "The Canterbury Tales: General Prologue" gives the introduction of the pilgrims and their appearances, their vocations and their history. The narrator used this prologue to give a glimpse of the pilgrims to the readers.
In the General prologue of the tale, one such character is the pardoner. A pardoner is someone who is licensed to sell indulgences or relics of a religious belief. This pardoner is more of a trickster for he deceives people and works for his own gain. Thus, the use of the word "paragon" for the Pardoner is ironic in the sense that a paragon is someone or something that is regarded to be perfect or a model example of excellence. Far from this is the character of the Pardoner. It is satiric for the Pardoner is exactly quite the opposite of what a paragon is.
Thus, the use of the word "paragon" by the writer Chaucer is to show the satire in the characterization of the Pardoner.
Shakespeare uses the technique of figurative language in a descriptive way. The writer has used this kind of method, in order for the readers to have a more vivid experience in imagining the scene. The characters had expressed their grief through words that you know has a more serious tone and filled with regrets in the line.