It's important to note that "discern" is a verb, and the suffix "-ern" is not a standalone suffix for forming verbs. It's part of the larger suffix -cern, which is used to create verbs with the general meaning of "to separate, distinguish, or perceive."
Here are some other words with the "-cern" suffix:
* Concern: To worry about something
* Discern: To perceive or recognize something
* Rehearse: To practice something in preparation
* Ascertain: To find out something for sure