give birth vs polish off

give birth

verb
  • To become the parent of by birthing. 

  • To release live offspring from the body into the environment. 

  • To become the source of. 

polish off

verb
  • To finish completely, especially a food (polish the plate with one's tongue) or liquor. 

  • To remove by polishing (rubbing with a fine abrasive). 

How often have the words give birth and polish off occurred in a corpus of books? (source: Google Ngram Viewer )