horsepower vs pressure

horsepower

noun
  • Power derived from the motion of a horse. 

  • Strength. 

  • A nonmetric unit of power (symbol hp) with various definitions, for different applications. The most common of them is probably the mechanical horsepower, approximately equal to 745.7 watts. 

  • A metric unit (symbol often PS from the German abbreviation), approximately equal to 735.5 watts. 

pressure

noun
  • A contrasting force or impulse of any kind 

  • A pressing; a force applied to a surface. 

  • Distress. 

  • The amount of force that is applied over a given area divided by the size of this area; force per unit area. 

  • Urgency 

verb
  • To encourage or heavily exert force or influence. 

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