the same year; used to indicate the same calendar year or (by context) the same age.
この車は同年モデルと比べて燃費が良い。
This car has better fuel economy compared to models from the same year.
彼は私と同年で、学生時代からの知り合いだ。
He is the same age as me and has been an acquaintance since our school days.
同年に生まれた著名な作家が多い。
There are many famous writers born in the same year.