cat's claw vs rub

cat's claw

noun
  • Used other than figuratively or idiomatically: see cat, claw. 

  • Uncaria tomentosa, a plant species found in the tropical jungles of South and Central America 

  • Biancaea decapetala, a thorny evergreen shrub of India 

  • Acacia plumosa, a medicinal plant species native to Brazil 

  • Grevillea alpina, a shrub species native to Australia 

  • Carpobrotus edulis, or uña de gato (Spanish: "cat's claw"), a plant species in the Aizoaceae family 

  • Mimosa nuttallii (formerly Schrankia nuttalli), a plant native to the Midwestern United States 

  • Dolichandra unguis-cati, or cat's claw creeper, a Central American climbing vine of the Bignoniaceae family 

  • Uncaria rhynchophylla, a plant species used in traditional Chinese medicine 

  • bayag-kambing (Caesalpinia crista) 

  • Martynia annua, a plant species endemic to Brazil 

  • Senegalia greggii, formerly Acacia greggii, a tree species native to the southwestern United States and northern Mexico 

  • Uncaria guianensis, a plant species found in Guyana 

rub

noun
  • An act of rubbing. 

  • A loan. 

  • In the game of crown green bowls, any obstacle by which a bowl is diverted from its normal course. 

  • Any substance designed to be applied by rubbing. 

  • A mixture of spices applied to meat before it is barbecued. 

  • A difficulty or problem. 

verb
  • To scour; to burnish; to polish; to brighten; to cleanse; often with up or over. 

  • To hinder; to cross; to thwart. 

  • To move (one object) while maintaining contact with another object over some area, with pressure and friction. 

  • To touch the jack with the bowl. 

  • To be rubbed against something. 

  • To rub something against (a second thing). 

  • To spread a substance thinly over; to smear. 

How often have the words cat's claw and rub occurred in a corpus of books? (source: Google Ngram Viewer )