43. What is the difference between the ordinary and extraordinary magisterium?

Ordinary magisterium:  the day to day teaching and preaching of the bishops in union with the Pope on faith and morals.  E.g. the Holy Father’s Wednesday audience, or bishop’s homilies

Extraordinary magisterium:  special teaching actions of the College of Bishops and Pope on faith and morals.  E.g. Definitions of an Ecumenical Council; Solemn definitions of the Pope alone when he speaks “ex cathedra”