For example, the word "book" refers objectively to a physical object constructed with bound pages, but in abstraction refers to a particular literary creation —regardless of how many physical copies of the "book" there are, it is one "book."[1] The word "book" then developed more abstract uses, such as in keeping a record (bookkeeping), or to keep a record of betting (booking), or as a verb for entering persons into a record ("to book"). Words may then be further abstracted and even have embedded puns, such as in 'to make history of oneself' ("he booked").