An ace in golf is when you get a hole in one.
A single swing that lands the ball into a golf hole. Therefore hole in one.
Hal's Hole in One Golf happened in 1991.
a hole in one
A birdie is a hole played one stroke under par.
Either a hole in one or an ace.
Golf is a game of many rules, the main one of which is that the goal is to reach the final hole with as few swings as possible. This is why the phrase "A hole in one" is so popular, it refers to making it to the hole in just one swing of the golf club.
Par for the hole.