As the English language continually evolves, new words and expressions are invented all the time. Some new English vocabulary is the result of cultural trends and may have been first used in a book, TV series, or a song. Others can be old words that have come back into fashion, or also old words that have taken on new meanings.
Not all new words, however, end up in the dictionary. This depends on how useful a word is to English communication and how frequently it is used across a broad range of contexts. Learning and using these new words will take you closer to sounding like a native spe