dig vs plunge

dig

verb
  • To thrust; to poke. 

  • To move hard-packed earth out of the way, especially downward to make a hole with a shovel. Or to drill, or the like, through rocks, roads, or the like. More generally, to make any similar hole by moving material out of the way. 

  • To get by digging; to take from the ground; often with up. 

  • To take ore from its bed, in distinction from making excavations in search of ore. 

  • To defend against an attack hit by the opposing team by successfully passing the ball 

  • To investigate, to research, often followed by out or up. 

noun
  • Digoxin. 

  • A defensive pass of the ball that has been attacked by the opposing team. 

  • A cutting, sarcastic remark. 

  • An archeological or paleontological investigation, or the site where such an investigation is taking place. 

  • A rare or interesting vinyl record bought second-hand. 

  • A thrust; a poke. 

  • The occupation of digging for gold. 

  • An innings. 

plunge

verb
  • To thrust into liquid, or into any penetrable substance; to immerse. 

  • To pitch or throw oneself headlong or violently forward, as a horse does. 

  • To bet heavily and recklessly; to risk large sums in gambling. 

  • To cast, stab or throw into some thing, state, condition or action. 

  • To fall or rush headlong into some thing, action, state or condition. 

  • To remove a blockage by suction. 

  • To dive, leap or rush (into water or some liquid); to submerge oneself. 

noun
  • Heavy and reckless betting in horse racing; hazardous speculation. 

  • A dive, leap, rush, or pitch into (into water). 

  • The act of plunging or submerging. 

  • The act of pitching or throwing oneself headlong or violently forward, like an unruly horse. 

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