A:Orders differ in something called "charism". Charism is defined as a unique gift or power from God given to that order's founder. Just one example is the Passionist charism
defined very eloquently here by an Australian Passionist. Another example can be found
on the website of the Poor Clares who are "on a mountain-top in the heart of the Arizonan desert." Consider also the so-called
"pink nuns" of Missouri and their call to Perpetual Adoration of the Blessed Sacrament and dedication to the Holy Spirit! Charism is a specific ability given by the divine to bring the Gospel to all the world. It is performed through such means as service to others, exhortation, spiritual leadership, works of mercy and more.