In education:
* Major: This is the primary area of study a student focuses on in their college or university program. It's the field they will likely pursue a career in. For example, a student's major could be English Literature, Computer Science, or Biology.
* Subject: A specific topic or field of study within a broader curriculum. For example, in a history program, "American History" could be a subject within the broader major of History.
In other contexts:
* Major issue or concern: This refers to something of significant importance or worry. For example, "Climate change is a major subject in today's political discourse."
* Major theme or topic: This refers to the central idea or concept that dominates a piece of work, like a book, movie, or speech. For example, "Love and loss are the major subjects explored in this novel."
To understand the meaning of "major subject" in a specific context, you need to look at the surrounding words and the overall conversation.