Without question, my biggest source of income is the salary I earn from my full time job. And I would definitely classify it as an active income. I actively trade my time, energy and effort (LOTS OF IT at the moment!) to earn this income.
I define passive income as income I earn without actively doing something to generate it. Income that I earn while I’m sleeping. How awesome is that? To have income streaming into my bank account without me having to work for it?