1. Noun:
* "The student is studying." Here, "student" is the subject of the sentence and a noun. It's a singular noun referring to one person.
* "The students are studying." Here, "students" is the subject and a plural noun, referring to multiple people.
2. Adjective:
* "This is a student loan." In this case, "student" is an adjective modifying the noun "loan".
3. Part of a compound noun:
* "The student body elected a new president." Here, "student body" acts as a compound noun.
4. Other:
* "Be a student of life." Here, "student" is used in an abstract sense, almost as a verb.
To determine the correct grammatical function of "student" in a sentence, you need to look at the whole sentence and its context.