I guess I'd focus on the word “side”, because somebody could be part of the gig economy when they're doing several gigs in order to survive. If it's a side thing.... I think Monique Moreau used the term “passion”. If it's a passionate thing where you're doing something because you're passionate about it and you make some money on the side not core to your survival and that, then there's a difference.
On April 2nd, 2019. See this statement in context.