boost vs lower

boost

verb
  • To lift or push from behind (one who is endeavoring to climb); to push up. 

  • To steal. 

  • To give a booster shot to. 

  • To help or encourage (something) to increase or improve; to assist in overcoming obstacles. 

  • To amplify; to signal boost. 

  • To jump-start a vehicle by using cables to connect the battery in a running vehicle to the battery in a vehicle that won't start. 

noun
  • A positive intake manifold pressure in cars with turbochargers or superchargers. 

  • A coordinate transformation that changes velocity. 

  • A push from behind, as to one who is endeavoring to climb. 

  • Something that helps, or adds power or effectiveness; assistance. 

lower

verb
  • to pull down 

  • To decrease in value, amount, etc. 

  • To reduce operations to single machine instructions, as part of compilation of a program. 

  • To reduce the degree, intensity, strength, etc., of 

  • To bring down; to humble 

  • (lower oneself) To humble oneself; to do something one considers to be beneath one's dignity. 

  • To let descend by its own weight, as something suspended; to let down 

  • To reduce the height of 

  • To depress as to direction 

  • To reduce (something) in value, amount, etc. 

  • To make less elevated 

  • To fall; to sink; to grow less; to diminish; to decrease 

adj
  • bottom; more towards the bottom than the middle of an object 

  • Situated on lower ground, nearer a coast, or more southerly. 

  • older 

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