Tort of Private Nuisance vs Public Nuisance confusion yaar

Samajh nahi aaya, please help. Aapne koi sahi khaas jawaab dhoondhega? During my internship, a client's case got dismissed under Tort of Private Nuisance, while another case went under Tort of Public Nuisance, both involving noise pollution from a factory. But isn't both essentially same thing? What's the actual difference between these two? Is it only about the number of people affected or something more? Can it be possible that a private nuisance can become public nuisance if not dealt with? And how does the requirement of "inactionable" in public nuisance fit in here? MH CET Law exams are around the corner, aur main aise concepts se confused hoon. Help!