This is the 4893rd most frequent Swedish word.
bissouma
"Bissouma" is not a Swedish word; it is a surname, commonly associated with the football player Yves Bissouma.
Here, "Bissouma" is used as a proper noun referring to a person's name and the subject of the sentence.
Bissouma spelar fotboll för sitt lag.
Bissouma plays football for his team.
In this example, "Bissouma" is again a proper noun referring to a person's name. It is the object of the verb "saw."
Jag såg Bissouma göra ett mål igår.
I saw Bissouma score a goal yesterday.
Here, "Bissouma" is used as a subject of the sentence and defined or described by the predicate as a football player.