Until recently I assume they were synonymous ๐ , Here you go to Uni immediatly after finishing HS.
From what I understand, colleges focus mainly on undergraduates, while universities provide undergraduate and graduate programs. It doesnโt necessarily mean that colleges are always smaller or have less resources than universities though.
In the UK, yes (mostly). In our system, weโve got further education (sixth form or college) which sits between high school and higher education (university). As well as providing A-level courses, colleges often provide more vocational courses that donโt necessarily lead into higher education. For example, my local college has hairdressing and bricklaying courses.
Confusingly, some universities are also made up of colleges. I think this is a minority of universities, though, and anecdotally, seems to be the older ones (Oxford, Cambridge, etc)