‘Public camming’ is classed as either the following:

Outside (garden / park / street ) – with the chance of someone seeing you

Inside (office / cafe / library ) – with chance someone will see you

So in other words if there’s a chance that someone from the general public seeing what you are doing, it would be classed as public camming.  This is because everyone who appears on your webcam has got to be verified & over the age of 18.