This is the 2086th most frequent Japanese word.
同年
"同年" means "the same year."
同年 refers to 'the same year' in which an event occurred, providing a time reference to another event.
彼は同年に結婚しました。
He got married in the same year.
同年 is used in the context of 'same age,' referencing the equivalent age level between two individuals.
彼女は私と同年齢です。
She is the same age as me.
同年 here specifies 'the same year' relative to a prior context, identifying the temporal relation to another event.