Second half; latter half — the later portion of something (time period, game, story, etc.).
試合の後半で逆転した。
They turned the game around in the second half.
映画の後半は少し退屈だった。
The latter half of the movie was a bit boring.
年度の後半に売上が伸びることが多い。
Sales often increase in the latter half of the fiscal year.