The document discusses different methods of word formation, including etymology, clipping, and acronyms. It defines etymology as the study of the origins and history of words. Etymologists use various techniques like comparing related languages and studying semantic changes to trace how words evolved over time. While an etymology reveals a word's root, its contemporary definition may differ from its original meaning. The document also defines clipping as shortening words by dropping syllables, and describes different types like back, fore, and middle clipping as well as complex clipping involving compound words.