The big difference is you can only build so many houses in a desirable location. Housing and the land they reside on are non-fungible. Medicine, food, clothing,

The big difference is you can only build so many houses in a desirable location. Housing and the land they reside on are non-fungible. Medicine, food, clothing, etc. are essentially fungible since you can pump out more medicine, clothes, etc. and they're able to replace what was used/lost/damaged/etc.