Here are some other related terms:
* Minor: A secondary area of study, typically consisting of fewer courses than a major.
* Concentration: A specific area of focus within a larger major, often found in larger departments with diverse subfields.
* Specialization: A deeper dive into a specific topic within a major or concentration.
* Track: A pre-defined set of courses within a major that prepares students for a specific career path.
* Area of Study: A broader term encompassing all of the above, including general education requirements.
Ultimately, "major" is the most common and widely recognized term for the primary academic focus in college.