19 is personification and numbness 20 is “a memory sequence ....”
The word mercy originates from France in 1125.
From the Italian sonetto, which means "a little sound or song," the sonnet is a popular classical form that has compelled poets for centuries. Traditionally, the sonnet is a fourteen-line poem written in iambic pentameter, which employ one of several rhyme schemes and adhere to a tightly structured thematic organization. Two sonnet forms provide the models from which all other sonnets are formed: the Petrarchan and the Shakespearean.
Orwell's purpose in writing this essay is to inform the “bad habits” of writing in politics, because of the lack of thinking their words through, and how Political writers declined the value of the English language to mislead people. This is about "Politics and the English Language" by the way