cat's claw vs cat's-paw

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 

cat's-paw

noun
  • Someone or something that comes down quickly upon a victim in the manner of a cat's paw. 

  • Any of several species of North American freshwater mussels of the genus Epioblasma, especially E. obliquata. 

  • A paw of a cat. 

  • A metal set of claws worn over the hand or wielded in the hand used to remove skin and flesh. 

  • A small crowbar with a handle at a right angle to a blade with a V-shaped notch, principally used by carpenters to remove nails. 

  • A supervisor whose reliance on a subordinate's analysis is so complete as to render him or her liable for the subordinate's animus or other misconduct towards a third employee. 

  • A twisting variant of the lark's-foot hitch which forms two small bights used to hook a pair of tackles to a rope. 

  • A minor breeze that ripples the surface of a body of water. 

  • Someone who acts in another's interest, (properly) unknowingly or through trickery. 

  • Any of several species of Australian bloodworts of the genus Anigozanthos, especially A. humilis. 

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