bur vs ear lobe

bur

noun
  • A rotary cutting implement having a selection of variously shaped heads. 

  • Any of several plants having such husks. 

  • A rough, prickly husk around the seeds or fruit of some plants. 

ear lobe

noun
  • The lower, exterior, fleshy, bulbous part of the human ear. 

  • The fleshy patch of skin below the ear tuft of a chicken. 

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