loofah vs sop

loofah

noun
  • The dried fibrous interior used as a sponge for bathing 

  • Any bathing sponge 

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

verb
  • To clean or scrub with a loofah. 

sop

noun
  • A piece of solid food to be soaked in liquid food. 

  • Something entirely soaked. 

  • A piece of turf placed in the road as a target for a throw in road bowling. 

  • Something given or done to pacify or bribe. 

  • Gravy. 

  • A weak, easily frightened or ineffectual person; a milksop 

verb
  • To soak in, or be soaked; to percolate. 

  • To steep or dip in any liquid. 

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