Clearly he is saying that people that don't understand what the word capitalism is associate it with every instance of greed they see. For example, working hard for long hours has absolutely nothing to do with capitalism but for some reason people here seem to be saying capitalism is evil because of it?
Fundamentally a capitalist accrues profit: it the difference between the wages and expenditure needed to produce a product. Either en masse or per unit, a capitalist maximizes this difference, of which the worker sees none.
Capitalism is greed: it is the accumulation of what you are not morally owed.