estimate vs sample

estimate

verb
  • To judge and form an opinion of the value of, from imperfect data. 

  • To calculate roughly, often from imperfect data. 

noun
  • A rough calculation or assessment of the value, size, or cost of something. 

  • A document (or verbal notification) specifying how much a job is likely to cost. 

  • An upper limitation on some positive quantity. 

sample

verb
  • To take or to test a sample or samples of. 

  • To reduce a continuous signal (such as a sound wave) to a discrete signal. 

  • To make or show something similar to a sample. 

  • To reuse a portion of (an existing sound recording) in a new piece of music. 

noun
  • A small quantity of food for tasting, typically given away for free. 

  • A subset of a population selected for measurement, observation or questioning, to provide statistical information about the population. 

  • Gratuitous borrowing of easily recognised phases (or moments) from other music (or movies) in a recording. 

  • A part or snippet of something taken or presented for inspection, or shown as evidence of the quality of the whole; a specimen. 

  • A small piece of some goods, for determining quality, colour, etc., typically given away for free. 

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