decade vs year

decade

noun
  • A period of ten days, (history) particularly those in the ancient Egyptian, Coptic, and French Revolutionary calendars. 

  • Any of the sets of ten sequential braille characters with predictable patterns. 

  • A group, set, or series of ten 

  • A series of prayers counted on a rosary, typically consisting of an Our Father, followed by ten Hail Marys, and concluding with a Glory Be and sometimes the Fatima Prayer. 

  • A period of ten years , particularly such a period beginning with a year ending in 0 and ending with a year ending in 9. 

  • A set of resistors, capacitors, etc. connected so as to provide even increments between one and ten times a base electrical resistance. 

  • The interval between any two quantities having a ratio of 10 to 1. 

  • A set of ten electronic devices used to represent digits. 

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 decade and year occurred in a corpus of books? (source: Google Ngram Viewer )