Academy
Part of speech: noun
Definition: A society of learned men united for the advancement of the arts and sciences, and literature, or some particular art or science; as, the French Academy; the American Academy of Arts and Sciences; academies of literature and philology. A school or place of training in which some special art is taught; as, the military academy at West Point; a riding academy; the Academy of Music. An institution for the study of higher learning; a college or a university. Popularly, a school, or seminary of learning, holding a rank between a college and a common school. A place of training; a school. A brothel (1811 Dictionary of Vulgar Tongue)
Academia
Part of speech: noun
Definition: The scientific and cultural community engaged in higher education and research, taken as a whole.