Spelling is different for a few things. It’s not entirely British, it’s not US. Cheque instead of check. Licence instead of license. Enrol instead of enroll. Mould instead of mold. In the US a “diploma”is the piece of paper while in Canada it is a course of study leading to a certificate, similar to an associate degree in the US.
So, it’s not the same, but it’s not radically different.
Just remember, it is a different country, though, despite the large number of similarities.
I am from the US but now lliving in Bristh Columbia Canada taking up Doctoral researcher. I would love to hear your questions and start chatting!