This is the 5273rd most frequent Japanese word.
黒澤
"黒澤" (Kurosawa) is a Japanese surname meaning "black swamp."
In this sentence, '黒澤' (Kurosawa) is used as a surname, specific to the well-known film director Akira Kurosawa.
黒澤監督の映画は国際的にも評価されています。
Director Kurosawa's films are internationally acclaimed.
Here, '黒澤' refers to a surname of a person known to the speaker, used with 'さん' as an honorific.
私の友人に黒澤さんという素晴らしい音楽家がいます。
I have a friend named Mr. Kurosawa, who is a wonderful musician.
In this context, '黒沢' represents the name of a specific artistic or cultural technique.