I looked at CIC glossary of terms. This is just my guess:
Bachelors degree; course involving 3 yrs or more of study in a discipline where the student receives an award of 'Bachelors' degree at the end of successfully completing the course requirements. Awarded by a University.
Graduate Certificate; course involving less than or equal to 2 yrs of study in a discipline where the student receives an award of 'Graduate Certificate' degree at the end of successfully completing the course requirements. The student must have completed an Undergraduate course and be a 'Graduate' before undertaking the course. May be awarded by a University or other educational institution.
Wait for others to reply as well.