best vs first base

best

noun
  • One's best behavior. 

  • The person (or persons; or thing or things) that is (are) most excellent. 

  • The supreme effort one can make, or has made. 

verb
  • Had best. 

  • To surpass in skill or achievement. 

  • To beat in a contest. 

adj
  • Most; largest. 

  • Most superior; most favorable. 

adv
  • To the most advantage; with the most success, cause, profit, benefit, or propriety. 

first base

noun
  • Completion of the first phase of an activity. 

  • The base after home plate in a counter-clockwise path around a baseball infield. 

  • Kissing, regarded as the first phase of a sexual relationship. 

  • The betting spot located immediately to the left of the dealer, which is first to receive cards and first to act. 

How often have the words best and first base occurred in a corpus of books? (source: Google Ngram Viewer )