Debounce a function when you want it to execute only once after a defined interval of time. If the event occurs multiple times within the interval, the interval is reset each time.
Example A user is typing into an input field and you want to execute a function, such as a call to the server, only when the user stops typing for a certain interval, such as 500ms.
Throttle a function when you want it to execute periodically with an interval in between each execution.
Example A user is typing into a field continuously for 30s but you want to make sure you capture a users input every 1s and perform an action.