This is the 3421st most frequent Korean word.
대학생
University student.
Here, '대학생' (college student) is used as a predicate to describe the subject of the sentence.
나는 대학생이다.
I am a college student.
'대학생' is used as a subject in combination with a demonstrative pronoun to specify a particular individual.
그 대학생은 학교 앞 카페에서 공부하고 있다.
That college student is studying at the cafe in front of the school.
The plural form '대학생들' is used here to denote a group of college students who are performing an activity.