This is the 6809th most frequent Japanese word.
フットサル
Futsal: A variant of indoor soccer played on a smaller field with five players per team.
The word 'フットサル' refers to the sport of futsal and is used as a direct object of the verb 'します' (to do/play).
私は週末にフットサルをします。
I play futsal on weekends.
Here, 'フットサル' is used as a modifier in a possessive phrase 'フットサルの試合' meaning 'futsal matches'.
フットサルの試合は楽しいです。
Futsal matches are enjoyable.
In this sentence, 'フットサル' categorizes the type of club, specifically a 'フットサル部' (futsal club).