☆Do some further reading and report what you have learned. The following links maybe of help.

1. “Scrabble dictionary adds ridic list of new words

   http://edition.cnn.com/2015/05/22/us/scrabble-new-words/index.html

2. "Of course ‘twerk’ belongs in the Oxford English Dictionary"

   http://www.washingtonpost.com/blogs/compost/wp/2015/06/25/of-course-twerk-belongs-in-the-oxford-english-dictionary/

3. " How the n-word became the new f-word"

   http://www.washingtonpost.com/opinions/2015/06/26/2ba794c6-1abc-11e5-ab92-c75ae6ab94b5_story.html