demand vs heave

demand

verb
  • To request forcefully. 

  • To require of someone. 

  • To claim a right to something. 

  • To ask forcefully for information. 

  • To issue a summons to court. 

noun
  • An urgent request. 

  • The desire to purchase goods and services. 

  • An order. 

  • The amount of a good or service that consumers are willing to buy at a particular price. 

  • A forceful claim for something. 

  • A requirement. 

  • More precisely peak demand or peak load, a measure of the maximum power load of a utility's customer over a short period of time; the power load integrated over a specified time interval. 

heave

verb
  • To utter with effort. 

  • To throw, cast. 

  • To displace (a vein, stratum). 

  • To lift with difficulty; to raise with some effort; to lift (a heavy thing). 

  • To be thrown up or raised; to rise upward, as a tower or mound. 

  • To rise and fall. 

  • To pull up with a rope or cable. 

  • To make an effort to raise, throw, or move anything; to strain to do something difficult. 

  • To move in a certain direction or into a certain position or situation. 

  • To retch, to make an effort to vomit; to vomit. 

noun
  • A horizontal dislocation in a metallic lode, taking place at an intersection with another lode. 

  • An upward motion; a rising; a swell or distention, as of the breast in difficult breathing, of the waves, of the earth in an earthquake, etc. 

  • An effort to vomit; retching. 

  • Broken wind in horses. 

  • The measure of extent to which a nautical vessel goes up and down in a short period of time. Compare pitch. 

  • An effort to raise something, such as a weight or one's own body, or to move something heavy. 

  • A forceful shot in which the ball follows a high trajectory 

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