loofah vs scouring pad

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. 

scouring pad

noun
  • A pad, having a soft, sponge-like side and a more abrasive side, used to wash up. 

  • A flat piece of a rough fabric used for cleaning purposes. 

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