academia vs academic

academia and academic both are nouns.

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

academia (noun)	academic (noun)
the academic world	an educator who works at a college or university

academia (adjective)	academic (adjective)
	associated with academia or an academy
	marked by a narrow focus on or display of learning especially its trivial aspects
	hypothetical or theoretical and not expected to produce an immediate or practical result