bar examination vs bar exam

bar examination and bar exam both are nouns.

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

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

bar examination and bar exam: an examination conducted at regular intervals to determine whether a candidate is qualified to practice law in a given jurisdiction

bar examination (noun)	bar exam (noun)
an examination conducted at regular intervals to determine whether a candidate is qualified to practice law in a given jurisdiction	an examination conducted at regular intervals to determine whether a candidate is qualified to practice law in a given jurisdiction