cat's claw vs kangaroo paw

cat's claw

noun
  • Grevillea alpina, a shrub species native to Australia 

  • 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 

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

  • 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 

kangaroo paw

noun
  • Any of various perennial flowering plants of the family Haemodoraceae, endemic to the south-west of Western Australia. 

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