Hi,
How it is different between Late and Belated?
ex: a Belated birthday, late dinner
We had a late dinner. The word 'late' has various meanings. You need to check your dictionary for all of them. Here are a couple. It can suggest a problem, 'after the correct or normal time'. Or it can just mean 'far into the night', eg 'we usually eat dinner late' can mean that we usually eat dinner at 10pm.
We had a belated dinner 'Lateness' was a problem with this dinner. It was not just late, it was too late.
Note that the word 'late' is used much, much more commonly than the word 'belated'.
Best wishes, Clive