slack vs sole

slack

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

  • 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. 

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

  • Small coal; coal dust. 

  • A valley, or small, shallow dell. 

adj
  • 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. 

  • Lacking diligence or care; not earnest or eager. 

  • Lax. 

  • Moderate in speed. 

  • Weak; not holding fast. 

verb
  • To slacken. 

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

adv
  • Slackly. 

sole

noun
  • A pond or pool; a dirty pond of standing water. 

  • The bottom or plantar surface of the foot. 

  • The end section of the chanter of a set of bagpipes. 

  • A piece of timber attached to the lower part of the rudder, to make it even with the false keel. 

  • The bottom of a furrow. 

  • The bottom of a shoe or boot. 

  • The bottom of the body of a plough; the slade. 

  • The horny substance under a horse's foot, which protects the more tender parts. 

  • The floor inside the cabin of a yacht or boat 

  • Solea solea, a flatfish of the family Soleidae. 

  • The bottom of an embrasure. 

  • The seat or bottom of a mine; applied to horizontal veins or lodes. 

verb
  • To pull by the ears; to pull about; haul; lug. 

  • to put a sole on (a shoe or boot) 

adj
  • Unique; unsurpassed. 

  • With independent power; unfettered. 

  • Unmarried (especially of a woman); widowed. 

  • Only. 

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