Dictionary

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).

Example: we moved to this town a year ago;  I quit smoking exactly one year ago

(by extension) 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.

Example: Mars goes around the sun once in a Martian year, or 1.88 Earth years.

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.

Example: A normal year has 365 full days, but there are 366 days in a leap year.

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

Example: During this school year I have to get up at 6:30 to catch the bus.

A very long time.

Example: It took years for the bus to come.