Words created for a purpose - during the 16th and 20th centuries, the number of words in English increased due to an increase in the numbers of literate people and the surge in technology.

Midnight was used by Shakespeare to describe this time of the day. He invented this word as well as 16,000 more during his life as he created plays and poems.

Yuppie was coined in the 1980s to describe a new type of person in first world countries.

Internet became a word used by the American military to describe its protected communications network, which was comprised of microwave stations, phone lines and satellites.