midterm vs midterm exam

midterm and midterm exam both are nouns.

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

As nouns, midterm and midterm exam are synonyms defined as:

midterm and midterm exam: an examination administered in the middle of an academic term

Other synonyms of midterm include midterm examination.

midterm (noun)	midterm exam (noun)
an examination administered in the middle of an academic term	an examination administered in the middle of an academic term
middle of an academic term or a political term in office
the middle of the gestation period