examination vs exam

examination and exam both are nouns.

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

As nouns, examination and exam are synonyms defined as:

examination and exam: a set of questions or exercises evaluating skill or knowledge

Other synonyms of examination include test.

examination (noun)	exam (noun)
the act of examining something closely (as for mistakes)	a set of questions or exercises evaluating skill or knowledge
the act of giving students or candidates a test (as by questions) to determine what they know or have learned
a detailed inspection of your conscience (as done daily by Jesuits)
a set of questions or exercises evaluating skill or knowledge
formal systematic questioning