The document summarizes words selected as "Words of the Year" by the American Dialect Society from 2009 to 2014. Each year, the society chooses words that best reflect the spirit, mood, and preoccupations of that year. Some of the words selected include "selfie," "hashtag," "twerk," and "BlackLivesMatter." The society also categorizes words as "Most Useful," "Most Creative," and others based on nomination and member voting.