noun
people of the same age; age-mates
Refers to people who are roughly the same age, often used in contexts of comparison or shared experience.
彼は同年輩の人たちとよく飲みに行く。
He often goes out drinking with people his own age.
同年輩の子どもと比べて、うち
Compared to children of the same age, my child is short.