Repairing the car by himself gave him a real 'sense of achievement'. [=a proud feeling of having done something difficult and worthwhile]
The students were awarded (with) certificates of 'achievement'. [=documents saying that they reached an academic goal]
Tests measure students' academic 'achievement'. [=measure how much the students have learned]
(..) Something resembling a man at least. You managed to stay soft and fat. Your nose buried in books. Spending your life reading about the achievements of better men. I'll wager you still can't sit a horse or wield a sword. Randyll, to be maester of the Night's Watch is a great honor. (..)2016 TvShow: Game of Thrones Title: Blood of My Blood Season: 6 Episode 6