accomplishment vs flash in the pan

accomplishment

noun
  • The act of accomplishing; completion; fulfilment. 

  • The lexical aspect (aktionsart) of verbs or predicates that change over time until a natural end point. 

  • That which completes, perfects, or equips thoroughly; acquirement; attainment; that which constitutes excellence of mind, or elegance of manners, acquired by education or training. 

  • Something accomplished; an achievement. 

flash in the pan

noun
  • A career notable for early success not followed by significant accomplishment. 

  • A transient occurrence with no long-term effect. 

How often have the words accomplishment and flash in the pan occurred in a corpus of books? (source: Google Ngram Viewer )