comp vs exam

comp and exam both are nouns.

Word	Noun	Adjective	Verb	Adverb
comp	Yes	No	No	No
exam	Yes	No	No	No

As nouns, exam is a hypernym of comp; that is, exam is a word with a broader meaning than comp:

comp: an intensive examination testing a student's proficiency in some special field of knowledge
exam: a set of questions or exercises evaluating skill or knowledge

Other hypernyms of comp include examination, test.

comp (noun)	exam (noun)
an intensive examination testing a student's proficiency in some special field of knowledge	a set of questions or exercises evaluating skill or knowledge