What's the Difference Between a Short Story and a Novella?

Most of the novellas i've done have been 20 k, which works out about four hours from audio. Fantasy novels are one 20 minimum. Like all my fantasy novels ar about one 20 to one forty. But i have some 200, ye, which so they're and pretty fast. So they're long. Big doorstopper, fat novels that you see heavens, like your brand at sanderson's, rubby gorde, 300 t three, 50. On short fiction: How many people do you know that make a living off of short stories? Larry, zero, exactly.