contract vs expand

contract

verb
  • To draw together or nearer; to shorten, narrow, or lessen. 

  • To enter into a contract with. 

  • To enter into, with mutual obligations; to make a bargain or covenant for. 

  • To make an agreement or contract; to covenant; to agree; to bargain. 

  • To betroth; to affiance. 

  • To shorten by omitting a letter or letters or by reducing two or more vowels or syllables to one. 

  • To bring on; to incur; to acquire. 

  • To gain or acquire (an illness). 

  • To draw together so as to wrinkle; to knit. 

noun
  • An order, usually given to a hired assassin, to kill someone. 

  • An agreement which the law will enforce in some way. A legally binding contract must contain at least one promise, i.e., a commitment or offer, by an offeror to and accepted by an offeree to do something in the future. A contract is thus executory rather than executed. 

  • An agreement between two or more parties, to perform a specific job or work order, often temporary or of fixed duration and usually governed by a written agreement. 

  • The document containing such an agreement. 

  • A part of legal studies dealing with laws and jurisdiction related to contracts. 

  • The declarer's undertaking to win the number of tricks bid with a stated suit as trump. 

expand

verb
  • To change (something) from a smaller form or size to a larger one; to spread out or lay open. 

  • To become, by rewriting, a longer, yet equivalent sum of terms. 

  • To feel generous or optimistic. 

  • To multiply both the numerator and the denominator of a fraction by the same natural number yielding a fraction of equal value 

  • To change or grow from smaller to larger in form, number, or size. 

  • To rewrite (an expression) as a longer, yet equivalent sum of terms. 

  • To increase the extent, number, volume or scope of (something). 

  • To express (something) at length and/or in detail. 

  • To increase in extent, number, volume or scope. 

  • To speak or write at length or in detail. 

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