equation vs part

equation

noun
  • The act or process of equating two or more things, or the state of those things being equal (that is, identical). 

  • An assertion that two expressions are equal, expressed by writing the two expressions separated by an equal sign; from which one is to determine a particular quantity. 

  • A small correction to observed values to remove the effects of systematic errors in an observation. 

part

noun
  • A distinct element of something larger. 

  • A unit of relative proportion in a mixture. 

  • The melody played or sung by a particular instrument, voice, or group of instruments or voices, within a polyphonic piece. 

  • Share, especially of a profit. 

  • A section of a document. 

  • Duty; responsibility. 

  • Each of two contrasting sides of an argument, debate etc.; "hand". 

  • A group inside a larger group. 

  • In the Hebrew lunisolar calendar, a unit of time equivalent to 3⅓ seconds. 

  • The dividing line formed by combing the hair in different directions. 

  • A constituent of character or capacity; quality; faculty; talent; usually in the plural with a collective sense. 

  • A fraction of a whole. 

  • Position or role (especially in a play). 

  • 3.5 centiliters of one ingredient in a mixed drink. 

  • A section of land; an area of a country or other territory; region. 

  • A room in a public building, especially a courtroom. 

adj
  • Fractional; partial. 

adv
  • Partly; partially; fractionally. 

verb
  • To separate by a process of extraction, elimination, or secretion. 

  • To leave (an IRC channel). 

  • To cut hair with a parting; shed. 

  • To leave the company of. 

  • To divide in two. 

  • To be divided in two or separated; shed. 

  • To separate or disunite; to remove from contact or contiguity; to sunder. 

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