This is the 9760th most frequent Swedish word.
golfsäsongen
"The golf season."
Here, 'golfsäsongen' is used as the subject of the sentence, referring to the specific timeframe when golfing activities take place.
Golfsäsongen börjar ofta tidigt i södra Sverige.
The golf season often begins early in southern Sweden.
In this example, 'golfsäsongen' is part of a prepositional phrase, specifying the period relevant to the action of playing golf.
Under golfsäsongen spelar vi tillsammans varje helg.
During the golf season, we play together every weekend.
This usage positions 'golfsäsongen' in genitive form to denote what period's end is being celebrated.