disposal vs effectivity

disposal

noun
  • The power to use something or someone. 

  • A disposing of or getting rid of something. 

  • A kick or a handball of the ball during a game. 

  • An arrangement, categorization or classification of things. 

effectivity

noun
  • The ability or power to be effective. 

  • [Technical documentation] An indication of the product, procedure, or timescale for which an item of information is applicable or effective. 

  • A measure of the effectiveness of something. 

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