This is the 335th most frequent Spanish word.
estadounidense
Relating to or a citizen of the United States.
In this sentence, 'estadounidense' is used as an identity marker to describe the nationality of the subject.
Mi amigo es estadounidense y vive en Nueva York.
My friend is American and lives in New York.
Here, 'estadounidense' is used as an adjective to describe the team's affiliation or origin.
El equipo estadounidense ganó el campeonato de baloncesto.
The American team won the basketball championship.
'Estadounidense' serves as an adjective describing the type or origin of the music.