while vs year

while

noun
  • An uncertain duration of time, a period of time. 

  • an uncertain long period of time 

  • an uncertain short moment 

prep
  • Until. 

verb
  • To pass (time) idly. 

  • To occupy or entertain (someone) in order to let time pass. 

conj
  • As long as. 

  • Until. 

  • During the same time that. 

  • Used to denote an individual experiencing racial profiling when performing a seemingly benign activity. 

  • Although. 

year

noun
  • A scheduled part of a calendar year spent in a specific activity. 

  • A Julian year, exactly 365.25 days, represented by "a". 

  • The proportion of a creature's lifespan equivalent to one year of an average human lifespan (see also dog year). 

  • A period between set dates that mark a year, from January 1 to December 31 by the Gregorian calendar, from Tishiri 1 to Elul 29 by the Jewish calendar, and from Muharram 1 to Dhu al-Hijjah 29 or 30 by the Islamic calendar. 

  • A level or grade in school or college. 

  • A solar year, the time it takes the Earth to complete one revolution of the Sun (between 365.24 and 365.26 days depending on the point of reference). 

  • The time it takes for any astronomical object (such as a planet, dwarf planet, small Solar System body, or comet) in direct orbit around a star (such as the Sun) to make one revolution around the star. 

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