In golf par means that you took exactly as many strokes as expected to complete the hole. Bogey is 1 over par (+1)Okay
Birdie is 1 under par (-1)Good
Eagle is 2 under par (-2) Better
Albatross 3 under par (-3)Best
Par is the expected number of shots to get the ball in the hole. A bogey is when you take one shot more than par. A birdie is when you take one shot less, and an eagle is when you take two shots less.