loofah vs sterilize

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 

sterilize

verb
  • To kill, deactivate (denature), or destroy (break apart) all living, viable microorganisms and spores on a surface, in a fluid, or contained in a compound, such as culture media or a medical product. 

  • To deprive of the ability to procreate. 

  • To redact (a document), removing classified or sensitive material. 

  • To make unable to produce; to make unprofitable. 

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