rise vs slack

rise

noun
  • A small hill; used chiefly in place names. 

  • An area of terrain that tends upward away from the viewer, such that it conceals the region behind it; a slope. 

  • The amount of material extending from waist to crotch in a pair of trousers or shorts. 

  • A very noticeable visible or audible reaction of a person or group. 

  • The process of or an action or instance of coming to prominence. 

  • An increase in a quantity, price, etc. 

  • The process of or an action or instance of moving upwards or becoming greater. 

  • The height of an arch or a step. 

verb
  • To become active, effective or operational, especially in response to an external or internal stimulus. 

  • To leave one's bed; to get up. 

  • To attain a higher status. 

  • To terminate an official sitting; to adjourn. 

  • To have its source (in a particular place). 

  • Of a quantity, price, etc., to increase. 

  • To develop. 

  • To become erect; to assume an upright position. 

  • To become more and more dignified or forcible; to increase in interest or power; said of style, thought, or discourse. 

  • To ascend on a musical scale; to take a higher pitch. 

  • To be resurrected. 

  • To swell or puff up in the process of fermentation; to become light. 

  • To slope upward. 

  • To become perceptible to the senses, other than sight. 

  • To come to mind; to be suggested; to occur. 

  • To go up; to ascend; to climb. 

  • To appear to move upwards from behind the horizon of a planet as a result of the planet's rotation. 

  • To come; to offer itself. 

  • To move upwards. 

  • To grow upward; to attain a certain height. 

  • To become agitated, opposed, or hostile; to go to war; to take up arms; to rebel. 

  • To cause to go up or ascend. 

slack

noun
  • A valley, or small, shallow dell. 

  • 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. 

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. 

adv
  • Slackly. 

verb
  • To slacken. 

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

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