学科

1. Origins, structure, and basic meaning

• Structure: 学科 (がっか) is a noun for an academic department defined by a field and curriculum.
• Basic usage: 興味のある学科を選ぶ makes a university department the object selected, while 同じ学科の学生 modifies students by shared departmental affiliation.

2. Common pitfalls and similar expressions

• Choice of department and current affiliation
  • 学科を選ぶ is a study-path decision, whereas 同じ学科 indicates an existing affiliation. The noun is not identical to the name of one course.