What is an event and what is a task?
Events are scheduled activities, their execution is planned on a date and they are allotted a certain time. For instance, these include a meeting, a visit, etc.
On the other hand, a task is a planned job to be undertaken but which has not been allotted a specific completion time. For instance, drawing up a proposal, sending a quote, etc., the latter are activities but they are not allotted a specific timeframe in which to be executed.