burgeoning vs churning

burgeoning

noun
  • The act of budding or sprouting. 

  • A new growth or expansion of something. 

  • A bud or branch. 

adj
  • That buds, grows or expands; developing. 

churning

noun
  • The act by which something is churned. 

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

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