The document provides definitions and examples for 4 vocabulary words: quintessential, commemorate, facetious, and cacophony. Quintessential means a perfect example, while commemorate means to honor the memory of something. Facetious refers to humor that is silly or inappropriate, and cacophony describes loud and unpleasant sounds. Each word is identified by part of speech, defined, used in a sentence, and asks how the reader could use the word in their own vocabulary this week.