churning vs tossing

churning

noun
  • The act by which something is churned. 

  • The quantity of butter prepared (by churning) at one time. 

tossing

noun
  • The motion of something that tosses; a throwing or sudden rising and falling. 

  • The process of washing ores by violent agitation in water, in order to separate the lighter or earthy particles; tozing. 

  • A process for refining tin by dropping it through the air while melted. 

adj
  • Used to disparage or curse someone or something. 

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