English: "the subject" can have many different meanings.
So we find in German: "das Arbeitsstück", "das Aussetzen", "der
Betreff", "das Fach", "das Fachgebiet", "der Gegenstand", "der
Gesprächsgegenstand", "das Gesprächsthema", "das Lehrfach", "der
Leichnam", "das Medium", "der Proband", "die Testperson, "der
Satzgegenstand".