loofah vs sponger

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 

verb
  • To clean or scrub with a loofah. 

sponger

noun
  • One who uses a sponge. 

  • A device for sponging cloth by means of a perforated adjustable cylinder. 

  • A parasitic hanger-on. 

  • A person or vessel employed in gathering sponges from the sea. 

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