boulder vs portion

boulder

noun
  • A session of bouldering; involvement in bouldering. 

  • A particle greater than 256 mm in diameter, following the Wentworth scale 

  • A large marble, in children's games. 

  • A large mass of stone detached from the surrounding land. 

verb
  • To engage in bouldering. 

portion

noun
  • One's fate; lot. 

  • An allocated amount. 

  • That which is divided off or separated, as a part from a whole; a separated part of anything. 

  • A wife's fortune; a dowry. 

  • The part of an estate given or falling to a child or heir; an inheritance. 

verb
  • To divide into amounts, as for allocation to specific purposes. 

  • To endow with a portion or inheritance. 

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