The word bookkeeping comes from the sense of book that means "record" or "written document," and it has the distinction of being one of very few words in English with three consecutive double letters.

What type of word is bookkeeping?

bookkeeping used as a noun:

accounting: the skill or practice of keeping books or systematic records of financial transactions, e.g. income and expenses.

Is bookkeeping in the dictionary?

the work or skill of keeping account books or systematic records of money transactions (distinguished from accounting).