Usages of ejercer
Me dijeron que tu primo residía en México y ejercía la medicina.
They told me that your cousin resided in Mexico and practiced medicine.
Él explicó que ya no ejercía, porque montaba un negocio nuevo.
He explained that he was no longer practicing, because he was setting up a new business.
Elon.io is an online learning platform
We have an entire course teaching Spanish (Latin America) grammar and vocabulary.