A bogey is one stroke over par.
4 strokes for a four stroke, intake, compression,powewr, exhaust
There are four strokes competed in the Olympics ... breaststroke, backstroke, butterfly, and freestyle.
The spark plug will fire once every four strokes, at the end of the compression stroke.
The medley is swum with four sifferent strokes: butterfly, backstroke, breaststroke, and finally, freestyle.
There are four official strokes Freestyle (front crawl) Backstroke (back crawl) Breaststroke Butterfly Many variations and other strokes but those are the four strokes in the Olympics there is also a stroke called I.M. (individual Medley) which is Fly, Back, Breast, Free. Also different relays
Four (4) same as usual one under par
A double eagle (or albatross) is 3 strokes below par. For example, if you get 3 strokes on a par 5, you would have a double eagle.