Either could be held for decades. Each shares a history that dates from the origins of time. But the biggest similarity is in price. I think raw land 50 years ago compares in price to current day silver. But, while silver, adjusted for inflation, is at a 5000 year price low, raw land is not at such a milestone today as it was 50 years ago.
Raw land is finite.
Silver is finite. What there is left below the earth, and stored on top of the earth, is all that there is. Both raw land and silver are of the physical realm. As such, more can not be created beyond the amount that already exists. Sure, we continue to take millions of new ounces of silver from the earth, but what we are really doing is taking from below the surface, and bringing it above the surface.