backboneless vs yellow

backboneless

adj
  • Cowardly, spineless. 

  • Without a backbone; invertebrate. 

yellow

adj
  • Lacking courage. 

  • Related to the Free Democratic Party; a political party in Germany. 

  • Far East Asian (relating to Asian people). 

  • Related to the Liberal Democrats. 

  • Having yellow as its color. 

  • Characterized by sensationalism, lurid content, and doubtful accuracy. 

  • Of the skin, having the colour traditionally attributed to Far East Asians, especially Chinese. 

noun
  • One of two groups of object balls, or a ball from that group, as used in the principally British version of pool that makes use of unnumbered balls (the (yellow(s) and red(s)); contrast stripes and solids in the originally American version with numbered balls). 

  • Any of various pierid butterflies of the subfamily Coliadinae, especially the yellow coloured species. Compare sulphur. 

  • The colour of gold, cheese, or a lemon; the colour obtained by mixing green and red light, or by subtracting blue from white light. 

  • One of the colour balls used in snooker, with a value of 2 points. 

  • A yellow card. 

  • The intermediate light in a set of three traffic lights, the illumination of which indicates that drivers should stop short of the intersection if it is safe to do so. 

verb
  • To become yellow or more yellow. 

  • To make (something) yellow or more yellow. 

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