bobble vs whank

bobble

verb
  • To bob up and down. 

  • To make a mistake in. 

  • To roll slowly. 

noun
  • A pill (a ball formed on the surface of the fabric, as on laundered clothes). 

  • A localized set of stitches forming a raised bump. 

  • A furry ball attached on top of a hat. 

  • Elasticated band used for securing hair (for instance in a ponytail), a hair tie 

  • A wobbling motion. 

whank

verb
  • To beat; to thrash; to whip; to lash. 

  • To cut, especially to cut off a large portion. 

noun
  • A strike with the fist; a blow; a knock. 

  • A large portion, slice or lump. 

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