ramble vs slack

ramble

noun
  • A bed of shale over the seam of coal. 

  • A leisurely stroll; a recreational walk in the countryside. 

  • A section of woodland suitable for leisurely walking. 

  • A rambling; an instance of someone talking at length without direction. 

verb
  • To lead the life of a vagabond or itinerant; to move about with no fixed place of address. 

  • To talk or write incessantly, unclearly, or incoherently, with many digressions. 

  • To follow a winding path or course. 

  • To move about aimlessly, or on a winding course 

  • To walk for pleasure; to amble or saunter. 

slack

noun
  • Small coal; coal dust. 

  • 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. 

  • A valley, or small, shallow dell. 

verb
  • To slacken. 

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

adv
  • Slackly. 

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. 

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