slack vs yellow

slack

adj
  • Lacking diligence or care; not earnest or eager. 

  • Moderately warm. 

  • Vulgar; sexually explicit, especially in dancehall music. 

  • Not active or busy, successful, or violent. 

  • Excess; surplus to requirements. 

  • Lax; not tense; not firmly extended. 

  • Lax. 

  • Moderate in speed. 

  • Weak; not holding fast. 

adv
  • Slackly. 

verb
  • To slacken. 

  • To lose cohesion or solidity by a chemical combination with water; to slake. 

noun
  • Unconditional listening attention given by client to patient. 

  • A temporary speed restriction where track maintenance or engineering work is being carried out at a particular place. 

  • A tidal marsh or shallow that periodically fills and drains. 

  • The part of anything that hangs loose, having no strain upon it. 

  • Small coal; coal dust. 

  • A valley, or small, shallow dell. 

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 slack and yellow occurred in a corpus of books? (source: Google Ngram Viewer )