clear away vs sponge out

clear away

verb
  • To dispose of, to get rid of, to remove. 

  • To tidy up, to remove mess or obstacles from a place to make it neat. 

  • To prepare some object for use by removing obstacles, untying or unfastening it. 

  • To leave, disappear 

sponge out

verb
  • To remove (something, especially debts). 

  • To clean the inside of (something) by using a sponge. 

  • To remove by using a sponge. 

How often have the words clear away and sponge out occurred in a corpus of books? (source: Google Ngram Viewer )