It does not seem that the definition of dissertation to thesis change from across the atlantic as suggested in
https://www.researchgate.net/post/What_is_the_difference_between_dissertation_and_thesis
but it also changes from a university to another in Canada without a full agreement between universities
https://www.grad.ubc.ca/current-students/dissertation-thesis-preparation/structure-theses-dissertations
while not even a mention of dissertation
https://www.ualberta.ca/graduate-studies/current-students/academic-requirements/thesis-requirement-and-preparation
I believe it is due to the mixed background!
Any suggestions or ideas!