Aero pot says it has "extremely high decor values". The actual value of the pot itself is 0 - the same as hanging pot.
Carpeted tile says that it remains decorative even when another tile is stacked on top of it. It seems to refer to earlier version of the building which was transparent for decor purposes. I tried to "stack another tile" on top of it, but no combination of tile/carpeted tile had any special behavior - carpeted tile was just a tile with higher decor but no movement bonus (making it strictly inferior to metal tile).
Steps to Reproduce
This issue has not been confirmed by a developer yet.