They are radically different. Corn is the textbook example of a commodity while land is the textbook example of a positional good. You could sell any realistic

They are radically different. Corn is the textbook example of a commodity while land is the textbook example of a positional good. You could sell any realistic amount of gourmet popcorn without affecting the supply of corn nor the price of other popcorn products, while selling housing affects the supply of land and the desirability of that housing stock.