clear up vs loofah

clear up

verb
  • To clean up. 

  • To depart or disappear. 

  • To clarify, to correct a misconception. 

  • To become free of certain blemishes. 

  • Of stormy weather, to dissipate, to become calm. 

  • To pot all of the remaining balls in a single turn. 

loofah

verb
  • To clean or scrub with a loofah. 

noun
  • Any bathing sponge 

  • A tropical vine, of the genus Luffa, having almost cylindrical fruit with a spongy, fibrous interior; the dishcloth gourd 

  • The dried fibrous interior used as a sponge for bathing 

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