This document discusses various types of lexical change in language, including borrowing, acronyms, blends, derivational compounding, reduplicative rhyming, abbreviations, analogy, verb plus particle constructions, productivity, and taboo/euphemism. Some examples provided include calques, acronyms like scuba and laser, blends like mockney and cosmeceutical, compounding suffixes like -athon and -gate, reduplicative rhyming words like ding-dong, and euphemisms used instead of taboo words like "honey-eater" instead of "bear".