academic session vs session

academic session and session both are nouns.

Word	Noun	Adjective	Verb	Adverb
academic session	Yes	No	No	No
session	Yes	No	No	No

As nouns, academic session and session are synonyms defined as:

academic session and session: the time during which a school holds classes

Other synonyms of academic session include academic term, school term.

academic session (noun)	session (noun)
the time during which a school holds classes	a meeting devoted to a particular activity
	a meeting for execution of a group's functions
	a meeting of spiritualists
	the time during which a school holds classes