This is the 11098th most frequent German word.
schwimmunterricht
Swimming lessons.
'Schwimmunterricht' is used as the subject of the noun phrase indicating an activity session.
Ich habe morgen meinen ersten Schwimmunterricht.
I have my first swimming lesson tomorrow.
Here 'Schwimmunterricht' is used to represent the recurring event on specific days.
Der Schwimmunterricht findet montags und donnerstags statt.
The swimming lesson takes place on Mondays and Thursdays.
In this context, 'Schwimmunterricht' is a general notion used to express the recommendation of taking swimming lessons.