This document defines 10 vocabulary words through their prefixes, roots, and examples. It explains that an invariable town hasn't changed in 20 years, proximity can make one uncomfortable, and being affiliated means being related or associated. It also notes that rejuvenate means to make young again, portly means round-bodied, encumber means to burden, and an unprecedented event has never happened before. Finally, it states that being exalted means being overjoyed, pompous means cocky, and something plausible could be true.