midterm examination vs midterm exam

midterm examination and midterm exam both are nouns.

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

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

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

Other synonyms of midterm examination include midterm.

midterm examination (noun)	midterm exam (noun)
an examination administered in the middle of an academic term	an examination administered in the middle of an academic term