As I said in my first post, certificate courses are late high school level, diploma courses are HNC(1 year) and HND(2 years) at college(not university). If you did an HNC that would allow you into 2nd year of an HND, if you did and HND that would allow you into either 2nd or 3rd year of a Bachelors degree, it just depends on course.
Degree courses are Bachelors degrees, either a 3 year ordinary Bachelors degree, or a 4-5 year Honors Bachelors degree.
Master degrees are post graduate degrees, usually 1 year courses, they are either taught or research based, usually taught, it is also possible to combine a Bachelors degree and masters degree into one.
So it goes, certificate -> HNC -> HND -> Bachelors Degree -> Master degree.-> Phd -> DSc -> Guru -> Obi-Wan Kenobi.
Ok a Dsc(Doctor of Science) will not count for arts I was just joking about, I only ever met one lecturer at University that had a DSc, quite a top accolade.