Concerted vs Collegial - What's the difference?

As adjectives the difference between concerted and collegial

is that concerted is performed through a concert of effort; done by agreement or in combination while collegial is collegial.

is (concert).

(head)

(concert)

(en adjective)

Performed through a concert of effort; done by agreement or in combination.

(music) Having separate parts for voices and instruments

* preconcerted

(en adjective)

of, relating to, or ruled by colleagues

(Roman Catholic Church ) ruled by bishops having equal power

of or relating to a college or its students; collegiate

possessing adherence to the ethos, standards and conduct that govern behavior among colleagues within a given organization or profession

* collegially * collegiality